祖国【そこく】
motherland, fatherland, native country
祖父【そふ】
grandfather, old man, kyogen mask used for the role of an old man
祖母【そぼ】
grandmother
先祖【せんぞ】
ancestor, forefather, foremother
祖先【そせん】
ancestor
元祖【がんそ】
originator, pioneer, inventor, founder, progenitor, primogenitor, founder of a family line
宗祖【しゅうそ】
sect founder