話題(わだい)topic, subject

僕(ぼく)と彼(かれ)には共通(きょうつう)の話題(わだい)が無(な)い。

We don't have any common topics of conversation between me and him.

あなたが両親(りょうしん)と話(はな)す話題(わだい)は何(なん)ですか？

What topics do you discuss with your parents?

話題(わだい)が尽(つ)きない友達(ともだち)と一緒(いっしょ)にいると一瞬(いっしゅん)で時間(じかん)が過(す)ぎる。

When I'm with a friend with whom I never run out of topics, time flies by in an instant.

最近(さいきん)仕事(しごと)を辞(や)めた同僚(どうりょう)の名前(なまえ)が久(ひさ)しぶりに話題(わだい)にのぼりました。

The name of a former colleague who recently quit came up as the subject in conversation after a long time.

話(はな)し合(あ)いの場(ば)の雰囲気(ふんいき)が悪(わる)くなった事(こと)を察知(さっち)して瞬時(しゅんじ)に話題(わだい)を変(か)えました。

Sensing that the atmosphere during the discussion was becoming tense, I quickly changed the topic.