Chaire, in its broadest sense, means chaki (tea utensils) in general into which powdered green tea is poured, and in a more limited sense means ceramic tea utensils, in contrast with wooden tea utensils (see "usuchaki" (tea utensils for a light tea)) as typified by natsume (a container for powdered tea).
茶入（ちゃいれ）とは、広義には抹茶を入れるのに用いる茶器全体を指し、狭義には棗(茶器)に代表される木製茶器（薄茶器参照）に対する陶磁器製の茶器を指す。