grow vs tiller

grow is not a noun while tiller is a noun.

Word	Noun	Adjective	Verb	Adverb
grow	No	No	Yes	No
tiller	Yes	No	Yes	No

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

grow: come to have or undergo a change of (physical features and attributes)
tiller: grow shoots in the form of stools or tillers

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

grow (noun)	tiller (noun)
	lever used to turn the rudder on a boat
	a farm implement used to break up the surface of the soil (for aeration and weed control and conservation of moisture)
	someone who tills land (prepares the soil for the planting of crops)
	a shoot that sprouts from the base of a grass

grow (verb)	tiller (verb)
come to have or undergo a change of (physical features and attributes)	grow shoots in the form of stools or tillers
become larger, greater, or bigger; expand or gain
cause to grow or develop
increase in size by natural process
pass into a condition gradually, take on a specific property or attribute; become
develop and reach maturity; undergo maturation
grow emotionally or mature
become attached by or as if by the process of growth
cultivate by growing, often involving improvements by means of agricultural techniques
come into existence; take on form or shape