This is the 18126th most frequent Korean word.
수집
Collection.
Here, '수집' is used as a noun meaning 'collection' or 'the act of collecting'.
나는 희귀한 동전 수집이 취미야.
Collecting rare coins is my hobby.
In this case, '수집한다' is a verb form indicating the action of gathering or acquiring items.
그 박물관은 오래된 유물을 수집한다.
That museum collects old artifacts.
'수집' is used to denote the assembling and organizing of information or data.