4-letter words aces, acme, acne, acts, aeon, ails, aims, ains, aits, alec, ales, alit, alme, alms, aloe, also, alto, alts, amen, amie, amin, amis, anes, anil, anis, anon, ante, anti, ants, asci,...
east, err, hunt, hunger, star, scar, van, vet, veanae, sat, test, guest, guess, rent, tent, sent, tune, tuna, hut, gut, nut, screen, scare, rear, steer, scan, tense, teenager, seen, see, race,...
Acronym
A ten letter word that can be made from the word celebration is NOTICEABLE.
cork, rock, rob, nrock, and some others too-lol