soft soap vs green soap

soft soap and green soap both are nouns.

Word	Noun	Adjective	Verb	Adverb
soft soap	Yes	No	No	No
green soap	Yes	No	No	No

As nouns, soft soap and green soap are synonyms defined as:

soft soap and green soap: a soft (or liquid) soap made from vegetable oils; used in certain skin diseases

soft soap (noun)	green soap (noun)
a soft (or liquid) soap made from vegetable oils; used in certain skin diseases	a soft (or liquid) soap made from vegetable oils; used in certain skin diseases
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