application vs lining

application and lining both are nouns.

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

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

application (noun)	lining (noun)
the action of putting something into operation	the act of attaching an inside lining (to a garment or curtain etc.)
a diligent effort	providing something with a surface of a different material
the act of bringing something to bear; using it for a particular purpose	a protective covering that protects an inside surface
the work of applying something	a piece of cloth that is used as the inside surface of a garment
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