If a window is draughty, is it wind-proof?

I say no. What say you?

sure it’s not just convection currents?

but, generally, if there’s air coming from the outside to the inside then it’s not wind-proof.

I sa yes, depending on whether window is sold as being windproof.
EDIT:
Is a badly fitting windproof jacket that lets in draughts through ill-fitting collars and cuffs, windproof?
EDIT: EDIT: Which is more or less what Northwind is about to say, and he would know.

The window could be windproof but the fitting not.

I say no

That

if its draughty then it’s wind resistant. 😉

The window could be windproof but the fitting not.

OK, how about this one: If a draught passes through the area currently occupied by window and associated fittings, is the property windproof?

is this a domestic argument or are there tradespeople involved?

Does the draught have a name?
Ones with names can get though windows.

Neither. edit @ wwaswas comment

OK, how about this one: If a draught passes through the area currently occupied by window and associated fittings, is the property windproof?

No, because someone left the front door open. Way too vague a question. 😕

BTW – Aldi are selling some of that stick om insulating strip that does a good job of making windows undraughty. Might save you a lot of unnecessary annoyance with unnecessarily annoying people.

If there’s a draught, then it’s obviously not draughtproof. I’m not sure where the line between wind and draught is, but let’s say it’s force 1 on the beaufort scale then anything below force 1 is a draught so if the moving air never moves above 1-3 mph, or if the ripples in a carefully placed cup of water never have crests regardless of the wind force outside the house, the air movement cannot be classified as wind so the house is windproof, not draughtproof.
Probably.