曲|きょくkyoku[0]heiban (flat)

1. noun, noun (suffix)composition; piece of music; song; track (on a record)
   そのピアニストはアンコールに応こたえて２曲きょく弾ひいた。↗

   The pianist played two encores.
2. nountune; melody; air
3. nounenjoyment; fun; interest; pleasure

• Synonym楽曲がっきょくWrittenWritten/formal prose. Refers to musical compositions, as in 「楽曲を提供する」; more formal than 「曲」.
• Synonym歌曲かきょくWrittenWritten/formal prose. Vocal music or art songs; leans toward classical music.
• Synonym一曲いっきょくNeutralNeutral. A single piece or tune, as in 「一曲歌う」; stresses that the number is one.
• SynonymコンポジションWrittenWritten/formal prose. Loanword for composition — composing music or composition in art; leans toward artistic creation.
• RelatedメロディーNeutralNeutral loanword for melody, as in 「メロディーが美しい」; focuses on the tune itself.
• Related歌うたNeutralNeutral. Songs and singing, as in 「歌を歌う」; has lyrics, while 「曲」 can be instrumental.
• Related歌謡かようWrittenWritten/formal prose. Songs and ballads broadly — pop songs, folk songs, children's songs — as in 「歌謡曲」.
• Related旋律せんりつWrittenWritten/formal prose. Melody as a music-theory term; in everyday speech say 「メロディー」.
• RelatedソングNeutralNeutral loanword for song, used mostly in names and titles, as in 「ラブソング」.
• RelatedオーパスFormalFormal loanword for opus — especially an important work by a composer or artist; rare in everyday use.

Use 「曲」 for pieces of music and songs; it also works as a counter, as in 「好きな曲」「三曲」. Say 「楽曲」 in formal contexts, 「歌」 when lyrics are involved, and 「メロディー」 for the melody itself.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. （キョク）楽曲がっきょく。
2. （キョク）楽曲がっきょくをかぞえる助数詞じょすうし。