sample vs random sample

sample and random sample both are nouns.

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

As nouns, random sample is a hyponym of sample; that is, random sample is a word with a more specific, narrower meaning than sample:

As nouns, random sample is a hyponym of sample; that is, random sample is a word with a more specific, narrower meaning than sample:

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

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

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