biostatistics vs life science

biostatistics and life science both are nouns.

Word	Noun	Adjective	Verb	Adverb
biostatistics	Yes	No	No	No
life science	Yes	No	No	No

As nouns, life science is a hypernym of biostatistics; that is, life science is a word with a broader meaning than biostatistics:

biostatistics: a branch of biology that studies biological phenomena and observations by means of statistical analysis
life science: any of the branches of natural science dealing with the structure and behavior of living organisms

Other hypernyms of biostatistics include statistics, bioscience.

biostatistics (noun)	life science (noun)
a branch of biology that studies biological phenomena and observations by means of statistical analysis	any of the branches of natural science dealing with the structure and behavior of living organisms