specialty vs plus

specialty and plus both are nouns.

Word	Noun	Adjective	Verb	Adverb
specialty	Yes	No	No	No
plus	Yes	Yes	No	No

As nouns, plus is a hypernym of specialty; that is, plus is a word with a broader meaning than specialty:

Other hypernyms of specialty include asset.

specialty (noun)	plus (noun)
the special line of work you have adopted as your career	the arithmetic operation of summing; calculating the sum of two or more numbers
a distinguishing trait	a useful or valuable quality
an asset of special worth or utility

specialty (adjective)	plus (adjective)
	on the positive side or higher end of a scale
	involving advantage or good