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"collection" is also used as a crossword clue. If that's what you saw, the answer is often set (3 letters).
Definitions
Group of gathered things
Word origin
From Middle English colleccioun, collection, from Old French collection, from Latin collēctiō, collēctiōnem, from collēctus, from colligō (“collect together”), composed of con- + legō (“bring together, gather, collect”), ultimately from Proto-Indo-European *leǵ- (“to gather, collect”). Equivalen to collect + -ion.
Used in a sentence
“The attic contains a remarkable collection of antiques, oddities, and random junk.”
“The asteroid belt consists of a collection of dust, rubble, and minor planets.”
“This year's Summer Collection will include a wide range of evening wear.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer3 curated clues
01“Set gathered over time”10 letters
02“Set of gathered objects”10 letters
03“Group of gathered items”10 letters
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