Since there are 6 definitions, your question should be...How can I tell the difference between a mole and a mole and a mole and a mole and a mole and a mole if they are all spelt the same?
Papa Mole sticks his nose out of the hole and exclaims "Wow! I smell honey!" Mama Mole sticks her nose out and exclaims "Darling that smells like sugar! Baby, what do you think?" Baby Mole says "I dunno. All I smell is mole asses."