Avogadro's law vs Avogadro's hypothesis

Avogadro's law and Avogadro's hypothesis both are nouns.

Word	Noun	Adjective	Verb	Adverb
Avogadro's law	Yes	No	No	No
Avogadro's hypothesis	Yes	No	No	No

As nouns, Avogadro's law and Avogadro's hypothesis are synonyms defined as:

Avogadro's law and Avogadro's hypothesis: the principle that equal volumes of all gases (given the same temperature and pressure) contain equal numbers of molecules

Avogadro's law (noun)	Avogadro's hypothesis (noun)
the principle that equal volumes of all gases (given the same temperature and pressure) contain equal numbers of molecules	the principle that equal volumes of all gases (given the same temperature and pressure) contain equal numbers of molecules