May blob vs kingcup

May blob and kingcup both are nouns.

Word	Noun	Adjective	Verb	Adverb
May blob	Yes	No	No	No
kingcup	Yes	No	No	No

As nouns, May blob and kingcup are synonyms defined as:

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

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

May blob (noun)	kingcup (noun)
swamp plant of Europe and North America having bright yellow flowers resembling buttercups	any of various plants of the genus Ranunculus
	swamp plant of Europe and North America having bright yellow flowers resembling buttercups