What do you consider a 2 lane, vs a 4 lane?

I assume a 2 lane is one lane in each direction. I assume a “four lane” means 2 lanes in each direction. Six lane is 3 lanes in each direction.
However, I just got laughed at by some kid when I pointed out a certain street (in the town I grew up in,just 30 miles up the road) was now a 4 lane. It was two lanes when I lived there. She laughed and said, “It’s not 4 lanes, LMFAO!”