Synonyms for heaping

Then a couch is formed by heaping up wool and down at the bottom of the nest.

I am heaping up words in vain, which is a thing outside my habits.

They were digging the earth with bayonets, they were heaping it up with their hands.

Instead of heaping reproaches on me, she acquiesced in the fraud.

He could not have taken a better method of heaping coals of fire on her head.

He forgives his enemies, no doubt, heaping coals of fire on their heads.

Is that heaping together of synonyms or all but synonyms, mere tautology?

Certainly, the materials for a holy war have long been heaping high.

He was quite alive to the delight of heaping coals of fire on his cousin's head.

She gave Selena the overflow by way of heaping coals of fire.