Chinese words with 字 character meaning (HSK)

MING2, ZI5
name (of a person or thing)

ZI4
letter, character, word, symbol

SHU4, ZI4
numeral, digit, number, figure, amount, digital (electronics etc)

WEN2, ZI4
wénzì

ZI4, MU3
letter (of the alphabet), alphabet

ZI4, MU4
caption, subtitle

CHI4, ZI4
(financial) deficit, red letter

FAN2, TI3, ZI4
traditional Chinese character

JIAN3, TI3, ZI4
simplified Chinese character, as opposed to traditional Chinese character 繁体字