isoclinic line vs isogram

isoclinic line and isogram both are nouns.

Word	Noun	Adjective	Verb	Adverb
isoclinic line	Yes	No	No	No
isogram	Yes	No	No	No

As nouns, isogram is a hypernym of isoclinic line; that is, isogram is a word with a broader meaning than isoclinic line:

isoclinic line: an isogram connecting points of equal magnetic inclination
isogram: a line drawn on a map connecting points having the same numerical value of some variable

Other hypernyms of isoclinic line include isarithm, isopleth.

isoclinic line (noun)	isogram (noun)
an isogram connecting points of equal magnetic inclination	a line drawn on a map connecting points having the same numerical value of some variable