grandfather

grandpa

Family
公 gong1

dad's dad

内公 lai(7) gong1

inside	grandfather
内 lai6	公 gong1

mom's dad

外公 ghua7 gong1

More details

outside	grandfather
外 ghua7	公 gong1

Note that you should always just use gong1 when addressing your grandfather. lai7 gong1 and ghua7 gong1 can be used when referring to your grandfather, to be more specific and differentiate when talking to someone else, but it should not be what you call your grandfather.

Words containing grandfather:

English	Peng'im	Chinese	Audio
great grandfather	lao(7) gong1	老公