piling vs spile

piling and spile both are nouns.

Word	Noun	Adjective	Verb	Adverb
piling	Yes	No	No	No
spile	Yes	No	No	No

As nouns, piling and spile are synonyms defined as:

piling and spile: a column of wood or steel or concrete that is driven into the ground to provide support for a structure

Other synonyms of piling include pile, stilt.

piling (noun)	spile (noun)
a column of wood or steel or concrete that is driven into the ground to provide support for a structure	a plug used to close a hole in a barrel or flask
	a column of wood or steel or concrete that is driven into the ground to provide support for a structure