extent vs orbit

extent and orbit both are nouns.

Word	Noun	Adjective	Verb	Adverb
extent	Yes	No	No	No
orbit	Yes	No	Yes	No

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

extent (noun)	orbit (noun)
the distance or area or volume over which something extends	an area in which something acts or operates or has power or control:
the point or degree to which something extends	the bony cavity in the skull containing the eyeball
	the (usually elliptical) path described by one celestial body in its revolution about another
	the path of an electron around the nucleus of an atom
	a particular environment or walk of life

extent (verb)	orbit (verb)
	move in an orbit