GG5, etc.

The JEs all have the "X and Y" pattern, which I think is an appropriate nuance.

@@ -17,0 +18,3 @@
+<gloss>speech and conduct</gloss>
+<gloss>words and actions</gloss>
+<gloss>words and deeds</gloss>
@@ -20,3 +23 @@
-<gloss>conduct</gloss>
-<gloss>words and actions</gloss>
-<gloss>words and deeds</gloss>
+<gloss>manners</gloss>

https://www.carruthers-law.co.uk/articles/the-protection-from-harassment-act-1997/
...Conduct includes speech...

daijs:
https://dictionary.goo.ne.jp/word/言動/
人前で言ったり、したりすること。言葉と行い。言行。「軽はずみな—を慎む」

不適切な言動 を英語で教えて!
https://nativecamp.net/heync/question/6267
Inappropriate behavior
Unacceptable conduct
Improper conduct


https://eow.alc.co.jp/search?q=言動
act
behavior（人の）
language and behavior
speech and action
speech and behavior
words and actions
words and deeds
言動が信頼できるものである
be authentic in one's words and actions（主語の）
～の言動から学ぶ
learn from the behavior of
～の言動を入念に分析する
carefully analyze the behavior of
～の言動を非難する
denounce the behavior of
（人）の生意気な言動
someone's cheeky behavior
（人）の言動にショックを受ける
be shocked at someone's behavior
be upset by someone's behavior
... etc... (a long list)

https://www.wordreference.com/jaen/言動
1. act
2. behavior, behaviour

longman's doesn't have the word, but includes it in a collocation as "gesture":
https://www.ldoceonline.com/jp/dictionary/japanese-english/言動
形だけの言動 a token gesture [token]

Heavily favors  "behavior". 
https://context.reverso.net/translation/japanese-english/言動

https://eow.alc.co.jp/search?q=offensive+conduct
use offensive language or conduct toward people
人にひわいな言動をする

言動と行動って意味同じですか？
https://detail.chiebukuro.yahoo.co.jp/qa/question_detail/q1247717962
言動と行動は意味が違います。
でも、言動には｢行動｣の意味が含まれています。
｢言動｣や｢言行｣は｢口で言うことと実際に行うこと｣と言う意味があります。

https://meaning-difference.com/?p=32736
「言動」は「言葉と行動」を意味するため、「言動」の中に「行動」は含まれることになります。

Japanese has some neat words.  This seems to be a relatively bog-standard word for "behavior" (or "conduct") that explicitly includes speech. (vs., say, 行動).  Whether "speech" needs to be expressly included in a translation is situation-dependent, often it does not.

My encounter:
あの年の男子は女の言動に一喜一憂するからな
tr1. boys that age are easily effected by how girls treat them  (I considered "treatment" as a gloss, but that's not so well supported)
tr2. girls can make the emotions of boys that age swing wildly. (女の言動　is simplified into "girls" (their actions and words implied)) 

Since I'm here, "words and actions" seems more commonplace than "words and deeds". I've just gone ahead and left "words and deeds" in as well; you could drop it.  But I would object to "speech and deeds" or "speech and actions" as unidiomatic. I think it's better to repeat "words" than force in another synonym of "speech" into a clunky pairing.

I think it's better to offer "conduct" than "speech and conduct", and including both would certainly send a confusing message.

@@ -18 +18,4 @@
-<gloss>speech and conduct</gloss>
+<gloss>behavior</gloss>
+<gloss>behaviour</gloss>
+<gloss>conduct</gloss>
+<gloss>words and actions</gloss>

GG5, example sentence

Add alt wording

@@ -19,0 +19,1 @@
+<gloss>words and deeds</gloss>