je ne sais quoi vs object

je ne sais quoi and object both are nouns.

Word	Noun	Adjective	Verb	Adverb
je ne sais quoi	Yes	No	No	No
object	Yes	No	Yes	No

As nouns, object is a hypernym of je ne sais quoi; that is, object is a word with a broader meaning than je ne sais quoi:

Other hypernyms of je ne sais quoi include physical object.

je ne sais quoi (noun)	object (noun)
something indescribable	a tangible and visible entity; an entity that can cast a shadow
	the goal intended to be attained (and which is believed to be attainable)
	the focus of cognitions or feelings
	(computing) a discrete item that provides a description of virtually anything known to a computer
	(grammar) a constituent that is acted upon

je ne sais quoi (verb)	object (verb)
	express or raise an objection or protest or criticism or express dissent
	be averse to or express disapproval of