aligning vs positioning

aligning is not a noun while positioning is a noun.

Word	Noun	Adjective	Verb	Adverb
aligning	No	Yes	No	No
positioning	Yes	Yes	No	No

As adjectives, aligning and positioning are synonyms defined as:

aligning (noun)	positioning (noun)
	the act of putting something in a certain place

aligning (adjective)	positioning (adjective)
causing to fall into line or into position	causing to fall into line or into position