=1

大

dà

big; large; great older (than another person) eldest (as in 大姐 dàjiě) greatly; freely; fully (dialect) father (dialect) uncle (father's brother)

=1

大

dài

see 大夫 dàifu

=2

蔡

Cài

surname Cai

=2

蔡

cài

(historical) Cai (an ancient Chinese state) (obsolete) tortoise used for divination (obsolete) weed (～國) (historical) Cai (an ancient Chinese state) a surname tortoise used for divination weed