- 小写字母 xiǎoxiězìmǔ lowercase letterslowercase letters; minuscules
- 大小写 dàxiǎoxiě letter casecapital and lowercase letters
- 不区分大小写 bùqūfēndàxiǎoxiě case insensitivenot distinguishing between capital and lowercase letters
- 区分大小写 qūfēndàxiǎoxiě case-sensitivedistinguishing capital letters from lowercase letters; matching case
