plane vs orbital plane

plane and orbital plane both are nouns.

Word	Noun	Adjective	Verb	Adverb
plane	Yes	Yes	Yes	No
orbital plane	Yes	No	No	No

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

Other hyponyms of plane include Cartesian plane, facet plane, midline, midplane, picture plane, tangent plane.

plane (noun)	orbital plane (noun)
a carpenter's hand tool with an adjustable blade for smoothing or shaping wood	(astronomy) the plane on which a body is orbiting
an aircraft that has a fixed wing and is powered by propellers or jets
a power tool for smoothing or shaping wood
(mathematics) an unbounded two-dimensional shape
a level of existence or development

plane (adjective)	orbital plane (adjective)
having a surface without slope, tilt in which no part is higher or lower than another

plane (verb)	orbital plane (verb)
cut or remove with or as if with a plane
make even or smooth, with or as with a carpenter's plane
travel on the surface of water