Why are Rotom's alternate forms named like they are?

Question

I understand:
Rotom-W (Wash)

Rotom-H (Heat)

Rotom-F (Frost)

What do these stand for?
Rotom-C

Rotom-S

Comments

i think mow is cutter form.

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S could be Silly...Flying + Levitate...

Answer 1

Rotom-H (Heat)

Rotom-W (Wash)

Rotom-F (Frost)

Rotom-S (Spin)

Rotom-C (Cut)

Got this from here.