Can a tunnel also be called a shaft?

I looked up the synonyms of the word tunnel and came across 'shaft' in the list. However, I have never heard of a tunnel being called a shaft before.

Shaft: a long, narrow, typically vertical hole that gives access to a mine, accommodates a lift in a building, or provides ventilation.

Tunnel: an artificial underground passage, especially one built through a hill or under a building, road, or river.

So a shaft could form part of a tunnel, particularly an entrance, but since a tunnel provides passage through something and a shaft is usually vertical it's unlikely that a whole tunnel would be called a shaft - unless it went right through the centre of the Earth.

From wikipedia:

In civil engineering a shaft is an underground vertical or inclined passageway. Shafts are constructed for a number of reasons including:

• For the construction of a tunnel
• For ventilation of a tunnel or underground structure
• As a drop shaft for a sewerage or water tunnel
• For access to a tunnel or underground structure, also as an escape route

For example, a mine shaft is a tunnel that goes down into the earth. I suppose a shaft can be considered maybe a type of tunnel. It's simply more of a vertical opening/passageway that could allow for a tunnel, ventilation unit, etc.