"Goedjn" wrote in message
Thats because you decided a-priori that "blowtorch" was a species
name, and not a genus name, when in fact
"Propane torch", "Gasoline torch", "Mapp Torch", and
"Oxy-Acetylene torch" are all species designations within
the genus "blowtorch".

I didn't decide anything. The blowtorch was, and still is, a specific type
of torch. It existed and co-existed along with many other types of torches.
I was not the one that named it, but perhaps the inventor did. Genus name
is "torch", but there are specific types, not to be confused with others.

You post from an edu account. Perhaps you have been in the hall of ivy for
a long time rather than work in the trades. If you asked someone at a
jobsite to bring you a blowtorch, you got a blowtorch, not a propane, MAPP,
or other type. Go check with the old timers in the maintenance department.