てんねん天然tennen
1.

The condition of being in a natural state, untouched by human intervention, often associated with purity and originality.

2.

An inherent quality or trait that one is born with, reflecting one’s natural disposition or characteristics.

3.

A colloquial expression referring to someone who unwittingly behaves in a silly or absent-minded manner, often endearing in nature.

Example:

この車は天然ガスで動く。

てんねんしげん天然資源tennenshigen
1.

Resources that are found in nature without human intervention, including elements such as land, forests, and water that can be utilized for various purposes.

2.

Materials and assets that are naturally occurring and essential for environmental sustainability and human development, such as minerals and ecosystems.

3.

Components of the natural world that are valuable for economic, ecological, and social functions, like renewable and non-renewable sources that support human life and industry.

Example:

その国は天然資源がある。

てんねんしょく天然色tennenshoku
1.

The inherent color that is naturally present in an object, unaffected by artificial alteration or modification.

2.

A representation in film or photography that aims to mimic the authentic colors found in nature.

てんねんとう天然痘tennentou
1.

A contagious and often deadly viral infection characterized by fever, body aches, and distinctive pus-filled blisters that can leave permanent scars, historically significant as a major cause of mortality before the development of vaccines.

2.

An infectious disease caused by the variola virus, known for its severe symptoms including high fever and a distinctive rash, which can result in significant scarring and lasting health impacts for survivors.

Example:

今ではみんな天然痘には免疫になっている。

てんねんえん天然塩tennen'enてんねんじお天然塩tennenjio
1.

A type of salt that is harvested from natural sources, such as seawater or mineral deposits, without the use of artificial additives or processes.

2.

Salt that retains the minerals and trace elements found in its source, contributing to its unique flavor and potential health benefits compared to refined salt.

3.

A naturally occurring mineral that is used as a seasoning and preservative, characterized by its unprocessed state and characteristic flavor profile.