What's the difference between i.e. and e.g.?
1845, from Spanish aficionado "amateur," specifically "devotee of bullfighting," literally "fond of," from afición "affection," from Latin affectionem (see affection). "Most sources derive this word from the Spanish verb aficionar but the verb does not appear in Spanish before 1555, and the word aficionado is recorded in the 1400's" [Barnhart]. In English, originally of devotees of bullfighting; in general use by 1882.