チェアchea

1. nounchair

• Synonym椅子いすNeutralThe everyday word for any chair, also used figuratively for a post or position, as in 「社長の椅子」. 「チェア」 is mostly limited to product and style names.
• Synonym腰掛けこしかけNeutralAny seat or stool, with or without a backrest; also a stopgap job, as in 「腰掛け就職」. 「チェア」 is specifically a single-seat chair with a backrest.

For everyday use say 「椅子」; 「チェア」 is mostly for product and style names like 「ゲーミングチェア」. 「腰掛け」 covers anything you sit on, backed or not, and also a stopgap job. 「倚子」 is just an old spelling of 「椅子」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. （背せもたれがあり一人ひとりで座すわる）椅子いす。腰掛こしかけ。