凑份子còu fèn zito pool resources (for a gift, project etc)
凑单còu dānto pad an order; to add extra items to an order so as to reach the minimum spend required to use a coupon, get a discount or qualify for free shipping
凑成còu chéngto put together; to make up (a set); to round up (a number to a convenient multiple); resulting in...
凑手còu shǒuat hand; within easy reach; convenient; handy