To carol is to sing joyously, and to warble (kindred with whirl) is to sing with trills or quavers, usually also with the idea of joy. Carol and warble are especially applied to the singing of birds.

J. C. Fernald, English Synonyms and Antonyms (1914)

Example sentences

sing You are the kind of guitarist I like to sing with.
hymn Sami was singing his favorite hymn, Amazing Grace.
ditty When I found him, he was mumbling a children's ditty.
chant Gunter started to chant in some weird language.
cubicle I've left my dressing gown in the cubicle.

Popularity over time

Word	1850 → 2019	Trend
carol		steady
sing		rising
hymn		steady
ditty		rising
wassail		rising
chant		rising

Use in printed books, per decade from 1850 to 2019.

By length

3 letters: lay¹, hum¹
4 letters: song¹, sing¹, hymn¹
5 letters: chant¹, chirp¹, trill¹, ditty²
6 letters: warble²
7 letters: twitter², whistle², cubicle³, wassail, chirrup

The small number after each word is its number of syllables (ditty² = 2 syllables).

In other languages

Français: carole