briar vs brier

briar and brier both are nouns.

Word	Noun	Adjective	Verb	Adverb
briar	Yes	No	No	No
brier	Yes	No	No	No

As nouns, briar and brier are synonyms defined as:

briar and brier: evergreen treelike Mediterranean shrub having fragrant white flowers in large terminal panicles and hard woody roots used to make tobacco pipes

Other synonyms of briar include Erica arborea, tree heath.

As nouns, briar and brier are synonyms defined as:

briar and brier: a very prickly woody vine of the eastern United States growing in tangled masses having tough round stems with shiny leathery leaves and small greenish flowers followed by clusters of inedible shiny black berries

Other synonyms of briar include bullbrier, catbrier, greenbrier, horse-brier, horse brier, Smilax rotundifolia.

As nouns, briar and brier are synonyms defined as:

briar and brier: Eurasian rose with prickly stems and fragrant leaves and bright pink flowers followed by scarlet hips

Other synonyms of briar include eglantine, Rosa eglanteria, sweetbriar, sweetbrier.

briar (noun)	brier (noun)
a pipe made from the root (briarroot) of the tree heath	evergreen treelike Mediterranean shrub having fragrant white flowers in large terminal panicles and hard woody roots used to make tobacco pipes
evergreen treelike Mediterranean shrub having fragrant white flowers in large terminal panicles and hard woody roots used to make tobacco pipes	a very prickly woody vine of the eastern United States growing in tangled masses having tough round stems with shiny leathery leaves and small greenish flowers followed by clusters of inedible shiny black berries
a very prickly woody vine of the eastern United States growing in tangled masses having tough round stems with shiny leathery leaves and small greenish flowers followed by clusters of inedible shiny black berries	Eurasian rose with prickly stems and fragrant leaves and bright pink flowers followed by scarlet hips
Eurasian rose with prickly stems and fragrant leaves and bright pink flowers followed by scarlet hips	tangled mass of prickly plants
	a thorny stem or twig