glacier, glazier

Glacier or glacier means a mass of  ice, moving very slowly--
It would take a long period of very warm weather to melt a glacier.
At the end of the last ice age, this glacier reached to the end of the valley.

Glazier or glazier means someone who fits windows with panes of glass--
When the joiner is done making the window frames, the glazier will put the glass in them.
He tried to fix the window himself, but then he called a glazier.

Now that you know that, you can say--
"We have asked a glazier to turn this into a picture window, so that we can look at the glacier and the mountains beyond."

Note--not to be confused with "glazer", meaning someone who puts the finish on pottery, leather, doughnuts, or something else--
The glazer will paint a distinctive design on each pot, and sign it on the bottom.