develop vs leaf

develop is not a noun while leaf is a noun.

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

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

develop: come to have or undergo a change of (physical features and attributes)
leaf: produce leaves, of plants

Other hyponyms of develop include feather, fledge, regrow, spring, sprout, stock, stool, tiller, pod, teethe, pupate, get up, work up, cut.

develop (noun)	leaf (noun)
	hinged or detachable flat section (as of a table or door)
	a sheet of any written or printed material (especially in a manuscript or book)
	the main organ of photosynthesis and transpiration in higher plants

develop (verb)	leaf (verb)
come to have or undergo a change of (physical features and attributes)	produce leaves, of plants
grow, progress, unfold, or evolve through a process of evolution, natural growth, differentiation, or a conducive environment	turn over pages
cause to grow and differentiate in ways conforming to its natural development	look through a book or other written material
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