twenty; twentieth; twenty-odd

(prefix) twenty- (e.g. twenty-one)

24 (hours in the day, etc)

number; twenty-four

twenty (start of contraction for 21-29) [Note]: 20 is 二十, in Cantonese, only for the numbers 21-29 inclusive that we use 廿呀 (as well as 廿呀幾, etc.)

24-hours; the entire day (can also be pronounced: je6 sei3 siu2 si4)

Twenty-four hours

twenty-four herbal tea

noun; Twenty-four Flavor Herbal Tea

eighteen to twenty-two; young age (slang)

Twenty-one

more than ninety (contraction on 廿 from jaa6 to aa6)

in the range of ninety's

亂噏, 發噏風

talk nonsense, to say random / illogical things

胡說八道

talk nonsense or rubbish (spoken)

the card game blackjack (lit "21 dots")

blackjack

二十一

twenty-one

twenty-one [colloquial]

talk rubbish; talk nonsense