しまい姉妹shimaiきょうだい姉妹kyoudai
1.

Refers to a female sibling, specifically the relationship between an older sister and a younger sister within a family structure.

2.

Describes two or more entities that share similarities or are equivalent in nature or function, often used in contexts such as organizations, products, or cultural institutions that have common origins or purposes.

3.

Represents the concept of sisterhood not strictly in familial terms, but also in expressions of affinity, solidarity, or partnership between two or more items or groups.

Example:

彼の姉妹は二人とも美人です。

しまいとし姉妹都市shimaitoshi
1.

A pair of cities in different countries that establish a formal relationship to foster goodwill and cultural exchange.

2.

Two cities that are united by an agreement to promote cooperation, friendship, and mutual understanding through shared activities and exchanges.

3.

Urban partnerships formed to enhance international ties and cultural awareness by encouraging collaboration in various fields.

Example:

神戸はシアトルの姉妹都市です。

いとこ従姉妹itokoじゅうしまい従姉妹juushimai
1.

A female relative who is the child of one’s uncle or aunt, sharing a familial bond through parentage.

2.

The female counterpart of a male cousin, distinguished by gender in terms of family relations.

3.

A term used to refer to the daughter of one’s parent’s siblings, highlighting the connection through family lineage and heritage.

4.

A specific familial relationship that denotes a close connection within the extended family, typically involving shared family gatherings and traditions.

Example:

彼のは、名前は忘れたが、看護婦だった。

しまいこう姉妹校shimaikou
1.

A school that has a formal relationship with another school, typically focusing on fostering educational exchanges and cooperation between students and staff.

2.

An educational institution connected to another institution through collaborative programs, cultural exchanges, or shared academic initiatives.

3.

A school that participates in mutual support and partnership with another school, often enhancing opportunities for international understanding and student interactions.

4.

An establishment that engages in joint activities with another school, promoting shared goals in education and cultural enrichment.

Example:

彼らの学校と私たちの学校は姉妹校です。

きょうだいしまい兄弟姉妹kyoudaishimai
1.

A term used to collectively refer to both male and female siblings within a family.

2.

Refers specifically to individuals who share at least one biological or legal parent and are part of the same family unit, encompassing both brothers and sisters.

3.

A familial relationship that includes all offspring of the same parents, emphasizing the shared connection and upbringing among them.