onshore vs inshore

onshore and inshore both are adjectives.

Word	Noun	Adjective	Verb	Adverb
onshore	No	Yes	No	Yes
inshore	No	Yes	No	Yes

As adjectives, onshore and inshore are synonyms defined as:

Other synonyms of onshore include shoreward.

onshore (adjective)	inshore (adjective)
(of winds) coming from the sea toward the land	(of winds) coming from the sea toward the land
on the edge of the land	close to a shore

onshore (adverb)	inshore (adverb)
on or toward the land	toward the shore