bouquet
Synonym discussion
Sense: noun/1
'Bouquet' is the normal word when flowers are tied and prepared to be given, carried, or shown in a formal setting. 'Bunch' is more everyday and often means flowers grouped together without much design, as in 'a bunch of tulips from the market.' 'Arrangement' focuses on the way flowers are organized, often in a vase, basket, or hotel display rather than in someone's hand. 'Posy' usually means a small bouquet and can sound slightly old-fashioned. 'Nosegay' is rare in modern everyday English and feels literary or historical. So a bride carries a bouquet, a shopper buys a bunch, and a lobby table may hold a flower arrangement.
Etymology
English borrowed 'bouquet' from French in the early 1700s. In French, the word first referred to a small grove or cluster, then to a bunch of flowers; English later extended it to the special smell of wine and similar drinks.