1Lending a hand to someone or an organization in need — providing help in the form of manpower, money, or supplies. Also used as the verb 応援する.
被災地へ物資を送って応援したい。
I want to help by sending supplies to the disaster area.
会社は繁忙期、他部署から人員の応援を受けた。
During the busy season, the company got backup staff from other departments.
友人の起業を資金面で応援している。
I'm supporting my friend's new business financially.
2Cheering someone or a team on at a sporting event or performance by shouting or clapping — refers to spectators' cheering or the activities of a cheering squad.
今日は友達の試合を応援しに行くつもりだ。
I'm planning to go cheer on my friend's match today.
スタジアムで大声で応援すると選手も励まされる。
Cheering loudly in the stadium encourages the players too.
彼女は家族の応援を受けて留学を決めた。
With her family cheering her on, she decided to study abroad.