footgear vs slipper

footgear and slipper both are nouns.

Word	Noun	Adjective	Verb	Adverb
footgear	Yes	No	No	No
slipper	Yes	No	No	No

As nouns, slipper is a hyponym of footgear; that is, slipper is a word with a more specific, narrower meaning than footgear:

footgear: covering for a person's feet
slipper: low footwear that can be slipped on and off easily; usually worn indoors

Other hyponyms of footgear include boot, clog, geta, patten, sabot, flats, overshoe, shoe, carpet slipper.

footgear (noun)	slipper (noun)
covering for a person's feet	low footwear that can be slipped on and off easily; usually worn indoors
	a person who slips or slides because of loss of traction