profit vs turn a profit

profit is a noun but turn a profit is not a noun.

Word	Noun	Adjective	Verb	Adverb
profit	Yes	No	Yes	No
turn a profit	No	No	Yes	No

As verbs, profit and turn a profit are synonyms defined as:

profit (noun)	turn a profit (noun)
the advantageous quality of being beneficial
the excess of revenues over outlays in a given period of time (including depreciation and other non-cash expenses)

profit (verb)	turn a profit (verb)
make a profit; gain money or materially	make a profit; gain money or materially
derive a benefit from