inertial navigation vs inertial guidance

inertial navigation and inertial guidance both are nouns.

Word	Noun	Adjective	Verb	Adverb
inertial navigation	Yes	No	No	No
inertial guidance	Yes	No	No	No

As nouns, inertial navigation and inertial guidance are synonyms defined as:

inertial navigation and inertial guidance: a method of controlling the flight of a missile by devices that respond to inertial forces

inertial navigation (noun)	inertial guidance (noun)
a method of controlling the flight of a missile by devices that respond to inertial forces	a method of controlling the flight of a missile by devices that respond to inertial forces