beaucoup

As adverbs the difference between plain and beaucoup

is that plain is (colloquial) simply while beaucoup is in abundance.

As nouns the difference between plain and beaucoup

is that plain is (rare|poetic) a lamentation or plain can be an expanse of land with relatively low relief while beaucoup is an abundance.

As an adjective plain

is .

As a verb plain

is to lament, bewail or plain can be (obsolete|transitive) to plane or level; to make plain or even on the surface.

As a determiner beaucoup is

(us) much, many, a lot of.

As nouns the difference between trs and beaucoup

is that trs is stalk of a grapevine while beaucoup is an abundance.

As a determiner beaucoup is

(us) much, many, a lot of.

As an adverb beaucoup is

in abundance.

As a determiner beaucoup

is (us) much, many, a lot of.

As a noun beaucoup

is an abundance.

As an adverb beaucoup

is in abundance.

As an adjective omnifarious is

of many or all forms, varieties, or kinds.