Loving this roundup of little-known words from Mental Floss's John Green. Tons of strange terms and designations in this collection, from the scientific to the anatomical to the socio-cultural.

Some highlights:

Petrichor – that amazing rain smell
• Gam – the collective noun used to describe whales (but what do you call a group of whale sharks?)
• Caruncula – the small, triangular bump on the inside corner of each eye. (Not be confused with your plica semilunaris – what some believe to be a vestigial remnant of a third eyelid.)

[Via Mental Floss]