Gaussian shape vs bell-shaped curve

Gaussian shape and bell-shaped curve both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gaussian shape	Yes	No	No	No
bell-shaped curve	Yes	No	No	No

As nouns, Gaussian shape and bell-shaped curve are synonyms defined as:

Gaussian shape and bell-shaped curve: a symmetrical curve representing the normal distribution

Other synonyms of Gaussian shape include Gaussian curve, normal curve.

Gaussian shape (noun)	bell-shaped curve (noun)
a symmetrical curve representing the normal distribution	a symmetrical curve representing the normal distribution