weak vs regular

weak is not a noun while regular is a noun.

Word	Noun	Adjective	Verb	Adverb
weak	No	Yes	No	No
regular	Yes	Yes	No	No

weak (noun)	regular (noun)
	a garment size for persons of average height and weight
	a regular patron
	a dependable follower (especially in party politics)
	a soldier in the regular army

weak (adjective)	regular (adjective)
wanting in physical strength	in accordance with fixed order or procedure or principle
overly diluted; thin and insipid	(of solids) having clear dimensions that can be measured; volume can be determined with a suitable geometric formula
tending downward in price	(used of the military) belonging to or engaged in by legitimate army forces
likely to fail under stress or pressure	not constipated
lacking bodily or muscular strength or vitality	relating to a person who does something regularly
wanting in moral strength, courage, or will; having the attributes of man as opposed to e.g. divine beings	officially full-time
deficient in magnitude; barely perceptible; lacking clarity or brightness or loudness etc	not deviating from what is normal
not having authority, political strength, or governing power	regularly scheduled for fixed times
(used of verbs) having standard (or regular) inflection	conforming to a standard or pattern
deficient in intelligence or mental power	occurring at fixed intervals
deficient or lacking in some skill	symmetrically arranged
(used of vowels or syllables) pronounced with little or no stress	often used as intensifiers
	in accord with regular practice or procedure