unseeable vs invisible

unseeable and invisible both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unseeable	No	Yes	No	No
invisible	No	Yes	No	No

As adjectives, unseeable and invisible are synonyms defined as:

unseeable and invisible: impossible or nearly impossible to see; imperceptible by the eye

unseeable (adjective)	invisible (adjective)
impossible or nearly impossible to see; imperceptible by the eye	impossible or nearly impossible to see; imperceptible by the eye
	not prominent or readily noticeable