indecent vs improper

indecent and improper both are adjectives.

Word	Noun	Adjective	Verb	Adverb
indecent	No	Yes	No	No
improper	No	Yes	No	No

indecent (adjective)	improper (adjective)
offensive to good taste especially in sexual matters	not suitable or right or appropriate
offending against sexual mores in conduct or appearance	not appropriate for a purpose or occasion
not in keeping with accepted standards of what is right or proper in polite society	not conforming to legality, moral law, or social convention