dot product vs real number

dot product and real number both are nouns.

Word	Noun	Adjective	Verb	Adverb
dot product	Yes	No	No	No
real number	Yes	No	No	No

As nouns, real number is a hypernym of dot product; that is, real number is a word with a broader meaning than dot product:

Other hypernyms of dot product include real.

dot product (noun)	real number (noun)
a real number (a scalar) that is the product of two vectors	any rational or irrational number