Adit and Ins

Adit noun - A nearly horizontal passage from the surface into a mine.

Ins and adit are semantically related In some cases you can replace term "Ins" with "Adit", this nouns are similar.

Ins noun - An agency in the Department of Justice that enforces laws and regulations for the admission of foreign-born persons to the United States.

Adit and ins are semantically related in admittance topic. Sometimes you can use "Adit" instead a noun "Ins".