Pains n. : Labor; toilsome effort; care or trouble taken; -- plural in form, but used with a singular or plural verb, commonly the former.

Example:
How do you tell if the pain your experiencing is Growing Pains or not?

Taxonomy
growing pains, pain, doctor, aches, joints, Parents, muscle aches, Call the Doctor, year-olds, bones, KidsHealth, wakes, strike, muscle pains, muscle ache, muscles, symptom, diagnosis.

Defination from the web:
pain? It could be growing pains. ... Your child is probably experiencing growing pains, a normal occurrence in about 25% to 40% of children. ...