A food web consists of one part of a food web. For example a food web would be: Carrot- Rabbit- Fox- Worm/ Decomposer. A food web is multiple food webs together. The multiple food chains 'web' together forming a food web.
food web is definetely larger since it is many food chains put together. for example: food chain grass--------->rabbit---------->fox whereas a food web is msny food chains put together fox eagle ,' ,' ', ' ,' ', rabbit mouse ,' ', ,' ', ,' ', ,' ', lettuce grass ' cheese hope i helped! =D