aiheet

Aiheet is a Finnish noun meaning topics or themes. It is the plural form of aihe and is used to refer to subjects under discussion, study, or content in curricula, conferences, media, and library catalogs. In educational materials, aiheet help organize courses by subject areas; in journalism they label sections or clusters of articles; in libraries they group works by topic.

Aihe comes from the Finnish word for subject or theme, and aiheet forms the standard plural by the suffix -et. Like other Finnish nouns, aiheet is gender-neutral and does not take articles. It combines with numerals, possessives, and adjectives as other Finnish nouns do.

Usage examples include: Kurssin aiheet ovat historia, talous ja kulttuuri. Aiheena tänään on ilmastonmuutos. Artikkelit on järjestetty aiheittain. Kokoelma on luokiteltu aiheittain. In some contexts aiheet can be used broadly to refer to content areas in education, media, and information organization, while more specific terms like teemat or aihepiiri may be chosen for nuanced meanings.

See also: aihe (singular), aihepiiri (topic area), aihealue (topic domain).