Word

だい
title; subject; theme; topic; problem (on a test); question; counter for questions (on a test)
Word

問題

もんだい
question (e.g. on a test); problem; problem (e.g. societal, political); question; issue; subject (e.g. of research); case; matter; question (i.e. doubt); public discussion; controversy; trouble; problem; inconvenience; difficulty
Word

主題歌

しゅだいか
theme song
Word

原題

げんだい
original title
Sentence

大気汚染はこの国の深刻な問題だ。

大気(たいき)汚染(おせん)はこの(くに)深刻(しんこく)問題(もんだい)だ。
Air pollution is a serious problem in this country.
Word

課題

かだい
subject; theme; issue; matter; homework; assignment; task; challenge; problem; question
Word

主題

しゅだい
subject; theme; motif
Word

題材

だいざい
subject; theme
Word

題名

だいめい
title
Word

改題

かいだい
changing a title