proportional sample vs stratified sample

proportional sample and stratified sample both are nouns.

Word	Noun	Adjective	Verb	Adverb
proportional sample	Yes	No	No	No
stratified sample	Yes	No	No	No

As nouns, proportional sample and stratified sample are synonyms defined as:

proportional sample and stratified sample: the population is divided into strata and a random sample is taken from each stratum

Other synonyms of proportional sample include representative sample.

proportional sample (noun)	stratified sample (noun)
the population is divided into strata and a random sample is taken from each stratum	the population is divided into strata and a random sample is taken from each stratum