चालीसपद vs शतपाद

[El Ganador]

Apparently there are two words in Hindi that mean 'centipede'.

चालीसपद means 'forty feet'

शतपाद means 'hundred feet'

The latter comes from Sanskrit, and I can't find the etymology of the former.

My question is, is there a difference as to when these words are used to describe the animal called a 'centipede' in English, or are they synonyms?

 

[MonsieurGonzalito]

I can't find the etymology of the former.

shat = 100 (sanskitized, literarly, and mostly in compounds)
chaaliis = 40 (two of the most common species of centipede have 40-something limbs, but others can have more than 100, never 100 exactly).