cationic detergent vs invert soap

cationic detergent and invert soap both are nouns.

Word	Noun	Adjective	Verb	Adverb
cationic detergent	Yes	No	No	No
invert soap	Yes	No	No	No

As nouns, cationic detergent and invert soap are synonyms defined as:

cationic detergent and invert soap: a class of synthetic detergents in which the surface-active part of the molecule is the cation

cationic detergent (noun)	invert soap (noun)
a class of synthetic detergents in which the surface-active part of the molecule is the cation	a class of synthetic detergents in which the surface-active part of the molecule is the cation