"canada2" regulatory domain

RouterOS Beginner Basics
1

Hello,
What is the difference between the “canada” and the “canada2” regulatory domain when configuring /interface wireless country?
Cheers,
DaveN

2

/interface
wireless info
country-info

canada

country: canada
  ranges: 2402-2472/b,g,gn20,gn40(30dBm)
          2417-2457/g-turbo(20dBm)
          5170-5250/a,an20,an40,ac20,ac40,ac80,ac160,ac80+80(23dBm)/passive,indoor
          5250-5330/a,an20,an40,ac20,ac40,ac80,ac160,ac80+80(27dBm)/dfs,passive
          5490-5590/a,an20,an40,ac20,ac40,ac80,ac160,ac80+80(27dBm)/dfs,passive
          5650-5730/a,an20,an40,ac20,ac40,ac80,ac160,ac80+80(27dBm)/dfs,passive
          5735-5835/a,an20,an40,ac20,ac40,ac80,ac160,ac80+80(30dBm)/outdoor
          5190-5230/a-turbo(23dBm)/indoor
          5230-5310/a-turbo(23dBm)/passive
          5740-5820/a-turbo(30dBm)/outdoor
          5180-5220/a-turbo(23dBm)/indoor
          5220-5260/a-turbo(23dBm)/passive,indoor
          5260-5300/a-turbo(23dBm)/dfs,passive
          5745-5825/a-turbo(30dBm)/outdoor
          902-927/b,g,g-turbo,gn20,gn40(30dBm)

while canada2:

  ranges: 2402-2472/b,g,gn20,gn40(30dBm)
          5170-5250/a,an20,an40,ac20,ac40,ac80,ac160,ac80+80(30dBm)/indoor
          5170-5250/a,an20,an40,ac20,ac40,ac80,ac160,ac80+80(23dBm)/outdoor
          5735-5835/a,an20,an40,ac20,ac40,ac80,ac160,ac80+80(30dBm)/outdoor)
3

Thank-you very much for both the information and the relevant command to show the information!