stela vs stele

stela and stele both are nouns.

Word	Noun	Adjective	Verb	Adverb
stela	Yes	No	No	No
stele	Yes	No	No	No

As nouns, stela and stele are synonyms defined as:

stela (noun)	stele (noun)
an ancient upright stone slab bearing markings	an ancient upright stone slab bearing markings
	the usually cylindrical central vascular portion of the axis of a vascular plant