Three variants are known, distinguished by one or two amino-acid substitutions.

Today, this variant is more known as slow coladeira, and it has also been known as toada or contratempo.

Turkmun have a their own variant of the Persian Dari language known as Turkmauny spoken by the rest of country.

A variant of diseases known to Mankind even before he ventured off his home planet.

Another variant of O. fragrans with deep golden flowers, formerly called O. aurantiacus is popular in Japan, and known as Kin-mokusei.

The variant, sometimes known as the "Focus EV".

This style of hotel accommodation was developed in Japan and has not gained popularity outside of the country, although Western variants known as "pod hotels" with larger accommodations and often private baths are being developed.

The first is in standard Brahmi, , the second in the Brahmi variant, Tocharian, also known as slanting Brahmi.

The face-first variant is technically known as an implant double underhook DDT.

A projected increased capacity variant known as the Boarhound was planned but never built, and a related much larger design, the Wolfhound, existed on paper only.