As nouns the difference between phyla and physa
is that phyla is while physa is (zoology) any of the genus (taxlink) of freshwater snails.
phyla
English
Noun
(head)
See also
* genus
* species
* subspecies
Anagrams
*
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physa
English
Noun
(
en-noun)
(zoology) Any of the genus (taxlink) of freshwater snails.
(
Webster 1913)