professing vs profession

professing and profession both are nouns.

Word	Noun	Adjective	Verb	Adverb
professing	Yes	No	No	No
profession	Yes	No	No	No

As nouns, professing and profession are synonyms defined as:

professing and profession: an open avowal (true or false) of some belief or opinion

professing (noun)	profession (noun)
an open avowal (true or false) of some belief or opinion	an occupation requiring special education (especially in the liberal arts or sciences)
	an open avowal (true or false) of some belief or opinion
	affirmation of acceptance of some religion or faith
	the body of people in a learned occupation