What type of word relationship does this analogy show

cave :cavern
snog: tune

Sub heading - main heading analogy

Step-by-step explanation:

An analogy shows the relationship between two things at some point of similarity. The given analogy can be referred to the sub-heading-main heading analogy. In the given example, cave is a smaller section of a cavern and a song is a smaller part of a tune. Therefore, one is the bigger part and the other is the smaller part.

if you mean

then it's c. 8, -7/3

but if you mean

then it is