fundraising drive; fundraising campaign
Refers to an organized effort to collect donations, often for charity or disaster relief.
The Red Cross launched a large-scale fundraising campaign.
I joined a fundraising drive for the disaster-stricken area.
募金 is the act of collecting donations or the donations themselves, while 募金運動 specifically refers to the organized campaign or drive.
チャリティー is a broader term for charity, often used in event names, whereas 募金運動 focuses on the fundraising activity.
Compound of 募金 (fundraising) and 運動 (movement, campaign).