proportional sample vs representative sample

proportional sample and representative sample both are nouns.

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

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

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

Other synonyms of proportional sample include stratified sample.

proportional sample (noun)	representative 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