intensify vs quicken

intensify and quicken both are verbs.

Word	Noun	Adjective	Verb	Adverb
intensify	No	No	Yes	No
quicken	No	No	Yes	No

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

intensify (verb)	quicken (verb)
become more intense	give new life or energy to
make more intense, stronger, or more marked	show signs of life
increase in extent or intensity	give life or energy to
make the chemically affected part of (a negative) denser or more opaque in order produce a stronger contrast between light and dark	move faster
	make keen or more acute