This is the 71st most frequent Spanish word.
mayor
"Mayor" in Spanish means "older," "oldest," or "greater." It can also mean "major" depending on the context.
In this context, 'mayor' serves as a superlative adjective meaning 'greater' in terms of degree or extent.
Ella tiene el mayor interés en aprender.
She has the greatest interest in learning.
In this sentence, 'mayor' is used as a comparative adjective to indicate 'older' in terms of age.
Mi hermana es mayor que yo.
My sister is older than me.
Here, 'mayor' is used as a noun meaning the elected head of a city.