course vs inside track

course and inside track both are nouns.

Word	Noun	Adjective	Verb	Adverb
course	Yes	No	Yes	Yes
inside track	Yes	No	No	No

As nouns, inside track is a hyponym of course; that is, inside track is a word with a more specific, narrower meaning than course:

Other hyponyms of course include collision course, round, steps, belt, swath, trail.

course (noun)	inside track (noun)
a mode of action	a favorable position in a competition
education imparted in a series of lessons or meetings	the inner side of a curved racecourse
facility consisting of a circumscribed area of land or water laid out for a sport
(construction) a layer of masonry
part of a meal served at one time
a connected series of events or actions or developments
a body of students who are taught together
general line of orientation
a line or route along which something travels or moves

course (adverb)	inside track (adverb)
as might be expected