How many letters does the top answer for “the words of a song.” have?

The most common answer is lyric (5 letters).

Crossword clue: the words of a song.

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

lyric 5 letters web-def

the text of a popular song or musical-comedy number

another word for song 50% similar → vocal

city in song 50% similar → shangqiu

song by alizadeh 50% similar → dripdrop

song by babushki 50% similar → partyforeverybody

song by band 50% similar → givepeaceachance

song by bennett 50% similar → partyrockanthem

song by bocelli 50% similar → contepartiro

song by bowie 50% similar → spaceoddity