insignificant vs hole-and-corner

insignificant and hole-and-corner both are adjectives.

Word	Noun	Adjective	Verb	Adverb
insignificant	No	Yes	No	No
hole-and-corner	No	Yes	No	No

insignificant (adjective)	hole-and-corner (adjective)
devoid of importance, meaning, or force	conducted with or marked by hidden aims or methods
signifying nothing	relating to the peripheral and unimportant aspects of life
of little importance or influence or power; of minor status
small and unimpressive