n. 1
A mass of things heaped together; a heap.
n. 2
A group or list of related items up for consideration, especially in some kind of selection process.
When we were looking for a new housemate, we put the nice woman on the "maybe" pile, and the annoying guy on the "no" pile.
v. 1
To lay or throw into a pile or heap; to heap up; to collect into a mass; to accumulate
They were piling up wood on the wheelbarrow.
v. 2
To cover with heaps; or in great abundance; to fill or overfill; to load.
We piled the camel with our loads.

Related words

Word family: pile-up
Phrases: pile-up pile of shit atomic pile pile of crap pile on helical pile nuclear pile pig pile

Forms

Use in printed books, per decade from 1850 to 2019.

3 letters: lot¹, pot¹, jam¹, mob¹, pac¹, nap¹, wad¹
4 letters: down¹, post¹, bank¹, mass¹, pack¹, mess¹, load¹, mint¹, heap¹, raft¹, slew¹
5 letters: sight¹, stack¹, batch¹, drift¹, mound¹, amass², spate¹
6 letters: plenty², gather², fabric², throng¹, oodles²
7 letters: collect², edifice³, cumulus
8 letters: building², mountain², acervate
9 letters: structure², aggregate³, megabucks³
10 letters: collection³, accumulate⁴, cumulation
11 letters: agglomerate⁴
12 letters: accumulation⁵

The small number after each word is its number of syllables (amass² = 2 syllables).