shillelagh vs shillalah

shillelagh and shillalah both are nouns.

Word	Noun	Adjective	Verb	Adverb
shillelagh	Yes	No	No	No
shillalah	Yes	No	No	No

As nouns, shillelagh and shillalah are synonyms defined as:

shillelagh and shillalah: a cudgel made of hardwood (usually oak or blackthorn)

shillelagh (noun)	shillalah (noun)
a cudgel made of hardwood (usually oak or blackthorn)	a cudgel made of hardwood (usually oak or blackthorn)