diff --git a/🔰 Grammar/Certainty.md b/🔰 Grammar/Certainty.md
index 58a2b2b..27fb37f 100644
--- a/🔰 Grammar/Certainty.md	
+++ b/🔰 Grammar/Certainty.md	
@@ -2,14 +2,26 @@
 
 ## Certain
 
-### に違いない
+### に決まっている (NEW!)
 
-に{違|ちが}いない means "I'm certain that".
+に{決|き}まっている means "certain that". It is casual.
 
 > [!info] Example
-> 私は{試験|しけん}を{合格|ごうかく}==に違いない==。
+> 私は{試験|しけん}を{合格|ごうかく}==に決まっている==。
 > I'm sure I'll pass the exam.
 
+### に違いない
+
+に{違|ちが}いない means "certain that". It is polite.
+
+TODO example
+
+### に相違ない (NEW!)
+
+に{相|そう}{違|い}ない means "certain that". It is very formal.
+
+TODO example
+
 ## Not always: とは限らない
 
 <div class="usage">
diff --git a/🔰 Grammar/Connectors.md b/🔰 Grammar/Connectors.md
index 1c08036..166ebdc 100644
--- a/🔰 Grammar/Connectors.md	
+++ b/🔰 Grammar/Connectors.md	
@@ -58,6 +58,22 @@ Used to introduce a new topic of conversation. Translates to "by the way".
 > ==ところで==、車の{修理|しゅうり}はどう。
 > By the way, how are the repairs for your car?
 
+## By the way: ちなみに (NEW!)
+
+Used to provide a new information on the current topic of conversation. Translates to "by the way".
+
+> [!info] Example
+> {駅|えき}に行くつもりです。==ちなみに==、駅の{前|まえ}には{新|あたら}しいレストランが{開|あけた}けたと言われた。
+> I'm going to the train station. By the way, I heard that a new restaurant has opened in front of the station.
+
+## Come to think of it: そう言えば (NEW!)
+
+Used to talk about a topic connected to the previous one, as something that is remembered.
+
+> [!info] Example
+> ==そういえば==、{今日|きょう}の{試験|しけん}はどうだったか。
+> Come to think of it, how was today's exam?
+
 ## Certainly: 確かに
 
 {確|たし}かに means "surely", "certainly".
@@ -65,3 +81,6 @@ Used to introduce a new topic of conversation. Translates to "by the way".
 > [!info] Example
 > この{歌|うた}は==確かに=={面白|おも|しろ}そうだ。
 > This song certainly sounds interesting.
+
+
+
diff --git a/🔰 Grammar/Means.md b/🔰 Grammar/Means.md
index 3964d2e..64830b6 100644
--- a/🔰 Grammar/Means.md	
+++ b/🔰 Grammar/Means.md	
@@ -86,3 +86,44 @@ Means "just as", "precisely". Can be written as 通り.
 > [!info] Example
 > {計画|けいかく}==どおり=={間|ま}に{合|あ}った。
 > We arrived on time as planned.
+
+## だけは (NEW!)
+
+<div class="usage">
+<div class="">
+	<p><span class="box">V (る)</span></p>
+</div>
+	<p class="r">+ だけは + </p>
+<div class="">
+	<p><span class="box"> V (た)</span></p>
+</div>
+</div>
+
+Means "to do all that one can".
+
+> [!info] Example
+> {試験|しけん}のため{勉強|べんきょう}する==だけは=={勉強|べんきょう}した。
+> I studied as much as I could for the exam.
+
+## もかまわず (NEW!)
+
+TODO: perhaps in "without"?
+
+<div class="usage">
+<div class="">
+	<p><span class="box">V + の</span></p>
+</div>
+	<p class="r">+ も構わず</p>
+</div>
+<div class="usage">
+<div class="">
+	<p><span class="box">N</span></p>
+</div>
+	<p class="r">+ も構わず</p>
+</div>
+
+も{構|かま}わず means "without worrying about".
+
+> [!info] Example
+> {未来|みらい}==も構わず==、{全然|ぜんぜん}{勉強|べんきょう}した。
+> Without worrying about the future, I didn't studied at all.
diff --git a/🔰 Grammar/Only - just.md b/🔰 Grammar/Only - just.md
index 2fd0468..e90b3fe 100644
--- a/🔰 Grammar/Only - just.md	
+++ b/🔰 Grammar/Only - just.md	
@@ -27,6 +27,14 @@ Can also be used as だけではなく.
 > この{都市|とし}は大きい==だけでなく==、きれいでもある。
 > This city is not only big, it's also pretty.
 
+## のみ (NEW!)
+
+It is a more formal, written version of だけ. It is only used with nouns.
+
+> [!info] Example
+> この{道|みち}は{歩行者|ほこうしゃ}==のみ==です。
+> This road is pedestrian only.
+
 ## きり
 
 <div class="usage">
@@ -104,6 +112,15 @@ Means "not only A but also B".
 > 彼女は{綺麗|きれい}==ばかりでなく=={天才|てんさい}もあるです。
 > She's not only beautiful, she's also a genius.
 
+## に限らず (NEW!)
+
+に{限|かぎ}らず means "not only A, but also B".
+Used with nouns.
+
+> [!info] Examples
+> この{店|みせ}は{平日|へいじつ}==に限らず==、{週末|しゅうまつ}も{営業|えいぎょう}している。
+> This store is open not only on weekdays but also on weekends.
+
 ## てばかりいる
 
 Means "only", "nothing but".
@@ -112,3 +129,29 @@ Used with a verb in て form.
 > [!info] Examples
 > {僕|ぼく}の{犬|いぬ}は{鳴|な}け==てばかりいる==。
 > My dog is always barking.
+
+# TODO
+
+## でしかない (NEW!)
+
+TODO ask nuance
+
+Means "nothing but" or "no more than". More often than not conveys a negative nuance.
+Used with nouns.
+
+> [!info] Examples
+> {彼|かれ}は{子供|こども}==でしかない==。
+> He nothing more than a child.
+
+## に過ぎない (ni suginai)
+
+TODO ask nuance
+TODO all
+
+でしかない similar (check in the handbook)
+
+Meaning: no more than; just; merely; only ~. This is used to emphasize that something is of a lower quality / quantity / level.
+Category: amount?
+
+https://jlptsensei.com/learn-japanese-grammar/%e3%81%ab%e9%81%8e%e3%81%8e%e3%81%aa%e3%81%84-ni-suginai-meaning/
+https://bunpro.jp/grammar_points/%E3%81%AB%E3%81%99%E3%81%8E%E3%81%AA%E3%81%84
diff --git a/🔰 Grammar/Question.md b/🔰 Grammar/Question.md
index 8ec7cfd..c1ccad9 100644
--- a/🔰 Grammar/Question.md	
+++ b/🔰 Grammar/Question.md	
@@ -88,3 +88,21 @@ This particle when added to the end of a sentence meaning "right?".
 * ==でしょう==・==だろう== expresses a probability or an assumption.
 * ==ではないか==・==じゃないか== invites or suggests an action.
 * ==ね== asks an agreement or a confirmation.
+
+## ことか (NEW!)
+
+<div class="usage">
+<div class="left">
+	<p><span class="box">V</span></p>
+	<p><span class="box">い-Adj</span></p>
+	<p><span class="box">な-Adj + な</span></p>
+	<p><span class="box">N + である</span></p>
+</div>
+	<p class="right">+ ことか</p>
+</div>
+
+Means "how" or "what". Used to describe an extent that is unusual or unbelievable. It is mostly used in written contexts, as it is a bit dramatic.
+
+> [!info] Example
+> フランスには、パン{屋|や}の{多|おお}さにどれほど{信|しん}じられない==ことか==。
+> It's incredible how many bakeries there are in France.