in which a person will take a special interest in one specific occupation / thing and will pursue that. There are many sub-categories to this word. Such as, a doctor would be a general occupations be he might specialize in gastroenterology. Also used in History / Social Studies class as the term used when (wo)man created civilizations and each person would have a single job, and would barter with other people for necessities.
Example:
Bob: Oh, i heard that you're studying to be a scientist Joe.
Joe: Yeah, my specialization is gonna be paleontology
Fogey/fogy /fougi/ sl. (early 18C+, orig. Scot) old-fashioned, stuck-in-the mud.
Person with old fashioned ideas which he is unwilling to change: Come to the disco and stop being such an old fogey!
You think me an old fogeyand an old tory, his thoughtful voice said. I saw three generations since O’Connel’s time. I remember the famine. Do you know that the orange lodges agitated for repeal of the union twenty years before O’Connel did or before the prelates of your communion denounced him as a demagogue? You fenians forget some things. (James Joyce, Ulysses. PenguinBooks,1992. p. 38)