merboy

As nouns the difference between merby and merboy

is that merby is (roller derby) men's roller derby while merboy is a young merman.

As nouns the difference between taxonomy and merboy

is that taxonomy is the science or the technique used to make a classification while merboy is a young merman.

Merlad is a synonym of merboy.

As nouns the difference between merlad and merboy

is that merlad is (label) a young male merperson while merboy is a young merman.

Merboy is a hyponym of merperson.

As nouns the difference between merboy and merperson

is that merboy is a young merman while merperson is a mythological creature with a human upper half (head, arms, and torso) and a piscine lower half.