different between valency vs persalt

English

From Late Latin valentia (“power”)

valency (countable and uncountable, plural valencies) (mostly UK)

(graph theory) The number of edges connected to a vertex in a graph.
Synonym: degree
(especially chemistry) Valence.
(linguistics) The capacity of a verb to take a specific number of arguments.
Synonym: valence
The capacity of something to combine with other things.

per- +? salt

persalt (plural persalts)

(chemistry) The form of a salt of a particular base/acid combination in which the base has the highest valency; i.e. the salt formally derived from a peroxide.

Alperts, Plaster, Platers, palster, palters, plaster, plastre, platers, psalter, replats, stapler

Send