Definitions:
relating to, denoting, or preserving the character of an early stage in the evolutionary or historical development of something

very basic or unsophisticated in terms of comfort, convenience, or efficiency

not developed or derived from anything else

(of a part or structure) in the first or early stage of formation or growth; rudimentary.

a person belonging to a preliterate, non-industrial society

a pre-renaissance painter, or one who imitates the pre-renaissance style.

a word, base, or root from which another is historically derived.