The word secretory refers to something that is related to secretion or producing and releasing substances. There are several synonyms for this term that can be used interchangeably depending on the context. Some of these synonyms include exocrine, glandular, endocrine, and hormonal. Exocrine refers to a gland that secretes substances outside the body, while glandular refers to the secretion-producing function in general. Endocrine and hormonal both refer to the secretion of hormones and other substances directly into the bloodstream. Other synonyms include sebaceous, serous, and mucous, which all refer to specific types of secretions produced by various glands in the body.