As verbs the difference between rendres and renders
is that rendres is third-person singular of rendre while renders is third-person singular of render.
As a noun renders is
plural of render.
rendres
English
Verb
(head)
(rendre)
rendre
English
Verb
(rendr)
----
renders
English
Noun
(head)
Verb
(head)
(render)
----