May blob vs Caltha palustris

May blob and Caltha palustris both are nouns.

Word	Noun	Adjective	Verb	Adverb
May blob	Yes	No	No	No
Caltha palustris	Yes	No	No	No

As nouns, May blob and Caltha palustris are synonyms defined as:

May blob and Caltha palustris: swamp plant of Europe and North America having bright yellow flowers resembling buttercups

Other synonyms of May blob include cowslip, kingcup, marsh marigold, meadow bright, water dragon.

May blob (noun)	Caltha palustris (noun)
swamp plant of Europe and North America having bright yellow flowers resembling buttercups	swamp plant of Europe and North America having bright yellow flowers resembling buttercups