We don't have synonyms for mayon yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are mayor, mason and mayan.
(n) :
(uncountable) Ellipsis of Mount Mayon: The most active volcano in the Philippines, located in Albay province and known for its almost perfect cone shape. [The most active volcano in the Philippines, located in Albay province and known for its almost perfect cone shape.]
(n) :
(uncountable) Ellipsis of Mount Mayon: The most active volcano in the Philippines, located in Albay province and known for its almost perfect cone shape. [The most active volcano in the Philippines, located in Albay province and known for its almost perfect cone shape.]