What is the difference between "latitude" and latitude line?"

3 answers

Latitude is how far N a point is from the equator. Latitude line is that latitude extended all the round the Earth.
Here's what I posted for you a few minutes ago.

Latitude lines go around the globe -- east-west -- and are parallel to each other. They measure distance from the Prime Meridian.

Longitude lines go up and down (the long way) -- north-south. They are not parellel to each other, but meet at the Poles. They measure distance from the Equator.
Surely the other way about?

Latitude lines go around the globe -- east-west -- and are parallel to each other. They measure distance from the Equator

Longitude lines go up and down (the long way) -- north-south. They are not parallel to each other, but meet at the Poles. They measure distance from the Prime Meridian