random sample vs sample

random sample and sample both are nouns.

Word	Noun	Adjective	Verb	Adverb
random sample	Yes	No	No	No
sample	Yes	No	Yes	No

As nouns, sample is a hypernym of random sample; that is, sample is a word with a broader meaning than random sample:

As nouns, sample is a hypernym of random sample; that is, sample is a word with a broader meaning than random sample:

random sample: a sample in which every element in the population has an equal chance of being selected
sample: items selected at random from a population and used to test hypotheses about the population

Other hypernyms of random sample include sample distribution, sampling.

random sample (noun)	sample (noun)
a sample grabbed at random	a small part of something intended as representative of the whole
a sample in which every element in the population has an equal chance of being selected	items selected at random from a population and used to test hypotheses about the population
	all or part of a natural object that is collected and preserved as an example of its class

random sample (verb)	sample (verb)
	take a sample of