noun
hymn; song of praise; paean
A song or poem that praises someone or something. Can be used literally for religious hymns or figuratively for any work that glorifies its subject.
教会で賛歌を歌った。
We sang a hymn at church.
この映画は青春への賛歌だ。
This movie is a paean to youth.
From 賛 (san, 'praise') + 歌 (ka, 'song'). The kanji 讃 is an older form of 賛, and 讚 is a further traditional variant.