regular vs lawful

regular is a noun but lawful is not a noun.

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

regular (noun)	lawful (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

regular (adjective)	lawful (adjective)
in accordance with fixed order or procedure or principle	conformable to or allowed by law
(of solids) having clear dimensions that can be measured; volume can be determined with a suitable geometric formula	authorized, sanctioned by, or in accordance with law
(used of the military) belonging to or engaged in by legitimate army forces	having a legally established claim
not constipated	according to custom or rule or natural law
relating to a person who does something regularly
officially full-time
not deviating from what is normal
regularly scheduled for fixed times
conforming to a standard or pattern
occurring at fixed intervals
symmetrically arranged
often used as intensifiers
in accord with regular practice or procedure