rugged vs canaliculate

rugged and canaliculate both are adjectives.

Word	Noun	Adjective	Verb	Adverb
rugged	No	Yes	No	No
canaliculate	No	Yes	No	No

rugged (adjective)	canaliculate (adjective)
sturdy and strong in constitution or construction; enduring	having thin parallel channels
having long narrow shallow depressions (as grooves or wrinkles) in the surface
very difficult; severely testing stamina or resolution
topographically very uneven