noun, noun or participle which takes 'suru', transitive verb, intransitive verb
gathering; massing; concentration
Often used for troops, people, or resources coming together in one place, especially in formal or military contexts. Can be used both transitively and intransitively.
軍隊が国境に集結した。
The troops massed at the border.
抗議者
Protesters are gathering in the square.