Not really like haggis.
Faggots are meatballs made from minced off-cuts and offal, especially pork together with herbs for flavouring and sometimes added bread crumbs.
Haggis is a savoury pudding containing sheep's pluck (heart, liver, and lungs), minced with onion, oatmeal, suet, spices, and salt, mixed with stock, and cooked while traditionally encased in the animal's stomach though now often in an artificial casing instead.