mearstone vs meerestone

mearstone and meerestone both are nouns.

Word	Noun	Adjective	Verb	Adverb
mearstone	Yes	No	No	No
meerestone	Yes	No	No	No

As nouns, mearstone and meerestone are synonyms defined as:

mearstone and meerestone: an old term for a landmark that consisted of a pile of stones surmounted by an upright slab

Other synonyms of mearstone include merestone.

mearstone (noun)	meerestone (noun)
an old term for a landmark that consisted of a pile of stones surmounted by an upright slab	an old term for a landmark that consisted of a pile of stones surmounted by an upright slab