As adverbs the difference between plenarly and planarly
is that plenarly is fully; completely while planarly is in a planar fashion.
plenarly
English
Adverb
(
en adverb)
(obsolete) Fully; completely.
*1499 , (John Skelton), The Bowge of Courte :
*:For now am I plenarely dysposed / To shewe you thynges that may not be disclosed.