street clothes vs habiliment

street clothes and habiliment both are nouns.

Word	Noun	Adjective	Verb	Adverb
street clothes	Yes	No	No	No
habiliment	Yes	No	No	No

As nouns, habiliment is a hypernym of street clothes; that is, habiliment is a word with a broader meaning than street clothes:

street clothes: ordinary clothing suitable for public appearances (as opposed to costumes or sports apparel or work clothes etc.)
habiliment: a covering designed to be worn on a person's body

Other hypernyms of street clothes include article of clothing, clothing, vesture, wear, wearable.

street clothes (noun)	habiliment (noun)
ordinary clothing suitable for public appearances (as opposed to costumes or sports apparel or work clothes etc.)	a covering designed to be worn on a person's body