what does it mean thread count?

[levyorit]

i know it's not complicate programming question still please help me.
i bought pinterest software, part of mega robot bomber.
what does it mean "thread count"
for sample repin

i have repin type (normal, from file, from board)
pin url's
thread count
repin count

also what does it mean when proxy private provider say : Our maximum limit is 10 threads.

thanks

[Synth3t1c]

Active connections.