bedder vs bedding plant

bedder and bedding plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
bedder	Yes	No	No	No
bedding plant	Yes	No	No	No

As nouns, bedder and bedding plant are synonyms defined as:

bedder and bedding plant: an ornamental plant suitable for planting in a flowerbed

bedder (noun)	bedding plant (noun)
an ornamental plant suitable for planting in a flowerbed	an ornamental plant suitable for planting in a flowerbed