increase vs hike

increase and hike both are nouns.

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

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

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

increase (verb)	hike (verb)
become bigger or greater in amount	walk a long way, as for pleasure or physical exercise
make bigger or more	increase