knotted vs knobbed

knotted and knobbed both are adjectives.

Word	Noun	Adjective	Verb	Adverb
knotted	No	Yes	No	No
knobbed	No	Yes	No	No

As adjectives, knotted and knobbed are synonyms defined as:

knotted and knobbed: used of old persons or old trees; covered with knobs or knots

Other synonyms of knotted include gnarled, gnarly, knotty.

knotted (adjective)	knobbed (adjective)
used of old persons or old trees; covered with knobs or knots	used of old persons or old trees; covered with knobs or knots
tied with a knot