The katakana syllable チャ (cha). Its equivalent in hiragana is ちゃ (cha).

菓子(かし) (kashi, “sweets; cake; pastry”) that accompanies (is served with) tea; tea dessert; teacake

teahouse (restaurant that sells tea) / tea dealer

teaware

tea party

a tea whisk (a bamboo whisk for making tea) / hair style where the hair is tied up in a bundle at the back of the head (resembling the shape of a tea whisk)

to take a tea break / (idiomatic) to make fun of, to make light of

knowledge or understanding of tea ceremony / a sense of refinement, elegance / mischievousness, playfulness, teasing

reap, cut (grass or other plants), prune

(Chinese character classification) compound indicatives