increase vs wage hike

increase and wage hike both are nouns.

Word	Noun	Adjective	Verb	Adverb
increase	Yes	No	Yes	No
wage hike	Yes	No	No	No

As nouns, wage hike is a hyponym of increase; that is, wage hike is a word with a more specific, narrower meaning than increase:

increase (noun)	wage hike (noun)
the act of increasing something	the amount a salary is increased
the amount by which something increases
a change resulting in an increase
a process of becoming larger or longer or more numerous or more important
a quantity that is added

increase (verb)	wage hike (verb)
become bigger or greater in amount
make bigger or more