募集
ぼしゅう · boshuu · JLPT N2 · noun
recruitment
📣 募 = call out to, 集 = gather together: 募集 = call out to gather people (recruitment)
募 means to call out or solicit, and 集 means to gather together. Together they describe publicly calling for people so they come together to join.
集 — bird 隹 on top of tree 木
集 is an ideograph showing a bird (隹) perched on a tree (木). The original form depicted three birds gathering on a tree, later simplified to one. From 'birds flocking together' it extended to mean 'gather, collect, assemble,' and by extension 'collection' or 'volume' of writings.