gravel vs befuddle

gravel is a noun but befuddle is not a noun.

Word	Noun	Adjective	Verb	Adverb
gravel	Yes	No	Yes	No
befuddle	No	No	Yes	No

As verbs, befuddle is a hypernym of gravel; that is, befuddle is a word with a broader meaning than gravel:

gravel: be a mystery or bewildering to
befuddle: be confusing or perplexing to; cause to be unable to think clearly

Other hypernyms of gravel include bedevil, confound, confuse, discombobulate, fox, fuddle, throw.

gravel (noun)	befuddle (noun)
rock fragments and pebbles

gravel (verb)	befuddle (verb)
be a mystery or bewildering to	be confusing or perplexing to; cause to be unable to think clearly
cover with gravel	make stupid with alcohol
cause annoyance in; disturb, especially by minor irritations