virya- (2) vb. "change, alter(nate)" (intransitive), pa.t. virnë/virinyë, cf. transitive vista-, q.v. (PE17:189, 191)
Quenya
virya-
verb. to change [self], alternate
virya-
verb. change, alter(nate)
virya
fresh
virya (1) adj. "fresh" (VT46:22)
vistë Reconstructed
noun. change
This word is unattested, but there is indirect evidence for it as an element of walwistë “change of mind” (PE17/189). This word likely contains the archaic form †wistë from before the change of *w-* to *v-*. Its modern form would be ✱vistë. If you accept inwist- as the stem form of inwis “change of mind”, it likely contains †wistë as well.
There is another attested word wirnë with the gloss “change” (PE17/191), but I think it is likelier to be the archaic form of the strong-past tense of the verb virya- instead of a noun.
ahya-
verb. change
#ahya- vb. "change" (intransitive), only attested in the past tense: ahyanë (PM:395)
céva
fresh, new
céva ("k")adj. "fresh, new" (VT48:7, 8)
vista-
verb. change
vista- (2) vb. "change" (transitive), pa.t. vistanë, cf. intransitive virya-, q.v. (PE17:189, 191)
wirnë
change
wirnë noun? "change" (PE17:191)
wirnë
noun. change
wistë Reconstructed
noun. change
An intransitive verb meaning “change [self], alternate” based on the root √WIS “change” (PE17/189, 191). For change of others, use transitive vista-.
One form of this word, wirnë (PE17/191), is unclear in function. It is glossed “change” and could be a noun. However, it almost identical in form to the strong-past virne of virya- attested on PE17/189. It seems likelier to me that this is the archaic form of the strong-past tense from before the change of ✶*w-* to *v-*.
Evidence elsewhere suggests the noun form of “change” is vistë; see that entry for discussion.