grow vs undergrow

grow and undergrow both are verbs.

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

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

grow (verb)	undergrow (verb)
come to have or undergo a change of (physical features and attributes)	grow below something
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