develop vs age

develop is not a noun while age is a noun.

Word	Noun	Adjective	Verb	Adverb
develop	No	No	Yes	No
age	Yes	No	Yes	No

As verbs, age is a hyponym of develop; that is, age is a word with a more specific, narrower meaning than develop:

develop: grow, progress, unfold, or evolve through a process of evolution, natural growth, differentiation, or a conducive environment
age: grow old or older

develop (noun)	age (noun)
	how long something has existed
	a time of life (usually defined in years) at which some particular qualification or power arises
	a late time of life
	an era of history having some distinctive feature
	a prolonged period of time

develop (verb)	age (verb)
come to have or undergo a change of (physical features and attributes)	grow old or older
grow, progress, unfold, or evolve through a process of evolution, natural growth, differentiation, or a conducive environment	begin to seem older; get older
cause to grow and differentiate in ways conforming to its natural development	make older
happen
change the use of and make available or usable
be gradually disclosed or unfolded; become manifest
gain through experience
become technologically advanced
grow emotionally or mature
expand in the form of a series
elaborate by the unfolding of a musical idea and by the working out of the rhythmic and harmonic changes in the theme
create by training and teaching
elaborate, as of theories and hypotheses
move into a strategically more advantageous position
move one's pieces into strategically more advantageous positions
superimpose a three-dimensional surface on a plane without stretching, in geometry
work out
make something new, such as a product or a mental or artistic creation
generate gradually
make visible by means of chemical solutions
come into existence; take on form or shape