Society of Sociopaths (2011)

from the New Oxford American Dictionary:

profess |prəˈfɛs| |proʊˈfɛs|

verb [ trans. ]

1 claim openly but often falsely that one has (a quality or feeling)

profession |prəˈfɛʃən| |proʊˈfɛʃən|noun1 a paid occupation, esp. one that involves prolonged training and a formal qualification : his chosen profession of teaching | a lawyer by profession.2 an open but often false declaration or claim : a profession of allegiance.• a declaration of belief in a religion.• the declaration or vows made on entering a religious order.• the ceremony or fact of being professed in a religious order.
ORIGIN Middle English (denoting the vow made on entering a religious order): via Old French from Latin professio(n-), from profiteri ‘declare publicly’ (see profess ). Sense 1 derives from the notion of an occupation that one “professes” to be skilled in.

professional |prəˈfɛʃənl| |proʊˈfɛʃənl| |prəˈfɛʃnəl| |proʊˈfɛʃnəl|

adjective

1 [ attrib. ] of, relating to, or connected with a profession : young professional people | the professional schools of Yale and Harvard.

2 (of a person) engaged in a specified activity as one's main paid occupation rather than as a pastime

antonym amateur.

amateur |ˈømədər| |ˈøməˈtər| |ˈøməˈtər| |ˈøməˈt(j)ʊr|

noun

a person who engages in a pursuit, esp. a sport, on an unpaid basis.

• a person considered contemptibly inept at a particular activity : that bunch of stumbling amateurs.

adjective

engaging or engaged in without payment;

ORIGIN late 18th cent.: from French, from Italian amatore, from Latin amator ‘lover,’ from amare ‘to love.’

Society of Sociopaths by tripmastermonk.