antiknocking vs leaded

antiknocking and leaded both are adjectives.

Word	Noun	Adjective	Verb	Adverb
antiknocking	No	Yes	No	No
leaded	No	Yes	No	No

antiknocking (adjective)	leaded (adjective)
suppressing or eliminating engine knock in combustion engines	treated or mixed with lead
	(of panes of glass) fixed in place by means of thin strips of lead
	having thin strips of lead between the lines of type