application vs painting

application and painting both are nouns.

Word	Noun	Adjective	Verb	Adverb
application	Yes	No	No	No
painting	Yes	No	No	No

As nouns, painting is a hyponym of application; that is, painting is a word with a more specific, narrower meaning than application:

application (noun)	painting (noun)
the action of putting something into operation	creating a picture with paints
a diligent effort	the occupation of a house painter
the act of bringing something to bear; using it for a particular purpose	the act of applying paint to a surface
the work of applying something	graphic art consisting of an artistic composition made by applying paints to a surface
liquid preparation having a soothing or antiseptic or medicinal action when applied to the skin
a verbal or written request for assistance or employment or admission to a school
a program that gives a computer instructions that provide the user with tools to accomplish a task