gemellus/a – twin
geminus/a – twin
gener – son-in-law, cousin
genitum – begotten, born
gens – male line, clan
genus – type, kind, birth, descent, sex, origin, class, race
generis – of the type, sex, etc.
germana – sister
germanus – brother
glos – husband’s sister
gloris – brother’s wife
gravida – pregnant