also: ひとそろい
noun
one set; a complete set
Refers to a single complete collection of matching or related items, such as a set of tools, dishes, or clothes.
See also: 一揃い
新しい包丁の一揃えを買った。
I bought a new set of kitchen knives.
この茶碗は一揃えで売っています。
These teacups are sold as a set.
セット is a more general loanword for a set or collection, while 一揃え emphasizes a complete, often traditional or matching set.
一式 is used for a complete set of items, often in formal or business contexts, and can refer to a larger or more comprehensive collection than 一揃え.
Compound of 一 (ひと, 'one') and 揃え (そろえ, 'arranging, set'), from the verb 揃える (そろえる, 'to arrange, to make uniform').