Forgive me if this is posted, as I'm at a loss on how to properly describe what I'm trying to find so searches aren't showing much. Leads me to think I'm describing it wrong

I'm trying to find info on the weave, think it's called weave. Looking at a tartan I see a crossing of oh say blue and green and a stripe of yellow. Is there a proper way (terms) to describe how a pattern or weaving is done? Blue laid on green dashed with yellow? heh Help, terms elude me!