Mammoth and Northern mammoth

Mammoth noun - Something that is unusually large and powerful.

Northern mammoth and mammoth are semantically related. In some cases you can replace phrase "Northern mammoth" with "Mammoth", this terms are similar.

Northern mammoth noun - Very hairy mammoth common in colder portions of the northern hemisphere.

Mammoth and northern mammoth are semantically related. You can use "Mammoth" instead a noun phrase "Northern mammoth".