だいよう代用daiyou
1.

The act of using something as a temporary replacement for another item that is normally required or preferred.

2.

The practice of utilizing an alternative product or item when the original is unavailable or impractical to use.

3.

The concept of compensating for the absence of something by employing another that serves a similar function or purpose, often in a makeshift manner.

4.

A method of filling a gap by using an item that is not the primary choice but satisfies the immediate need.

5.

The process of opting for a different option that can achieve comparable results to the original, especially under circumstances where the original is inaccessible or unsuitable.

Example:

この箱はテーブルの代用となる。

だいようしょく代用食daiyoushoku
1.

A type of food that serves as an alternative to rice, commonly used during wartime or in times of scarcity, typically including items such as noodles, potatoes, and pumpkin.

2.

Food items consumed as replacements when the standard staple, particularly rice, is unavailable, particularly noted during periods of hardship in historical contexts.

3.

Nutritional sources utilized as substitutes for the primary expected food, especially during the challenges of the Second World War, indicating adaptations in dietary practices.

だいようひん代用品daiyouhin
1.

An item or material used in place of another when the original is unavailable or impractical, often for temporary or emergency use.

2.

A resource or product that serves a similar purpose as something else, typically employed to meet a specific need when the preferred option is not accessible.

3.

A replacement good that fulfills the function of a different item, commonly utilized to cover a gap when the usual item cannot be obtained.

4.

An alternative product that is used as a stopgap solution, addressing a requirement in situations where the standard item is lacking or unsuitable.

Example:

バターの代用品としてマーガリンを使います。

だいようきょういん代用教員daiyoukyouin
1.

A temporary or interim educator who fills in for a regular teacher, typically lacking formal qualifications for the role.

2.

An individual who is employed to provide instruction and support in educational settings when the primary teacher is unavailable, usually on a short-term basis.