What's the difference between i.e. and e.g.?
1620s, "uniformity of nature;" by 1856 in biological sense, from Greek homogeneia "community of origin," from homogene "of the same race or kind" (see homogeneous).
homogeny ho·mog·e·ny (hə-mŏj'ə-nē, hō-)n. Similarity of structure between organs or parts, possibly of dissimilar function, that are related by common descent.