set up vs stratify

set up and stratify both are verbs.

Word	Noun	Adjective	Verb	Adverb
set up	No	No	Yes	No
stratify	No	No	Yes	No

As verbs, stratify is a hyponym of set up; that is, stratify is a word with a more specific, narrower meaning than set up:

set up (verb)	stratify (verb)
get ready for a particular purpose or event	render fertile and preserve by placing between layers of earth or sand
make ready or suitable or equip in advance for a particular purpose or for some use, event, etc	form layers or strata
equip with sails or masts	form, arrange, or deposit in layers
arrange thoughts, ideas, temporal events	divide society into social classes or castes
put into a proper or systematic order	develop different social levels, classes, or castes
erect and fasten
set up for use
place
create by putting components or members together
construct, build, or erect
begin, or enable someone else to begin, a venture by providing the means, logistics, etc.
produce
take or catch as if in a snare or trap
arrange the outcome of by means of deceit
set up or found