varnish vs. polyurethane question
Hello! I'm new to this forum. I'm usually on the kitchen forum since we're in the middle of a diy complete remodel. But I have a question about varnish vs. polyurethane and thought this would be the place to ask! First, what is the difference between them? We bought some legs online from a place in vermont and fashioned our own desk end (didn't like the one we bought through the cabinet company). After talking to a guy at a local paint/stain supply place and based on a sample we did on scrap cabinet wood I bought varnish and put three coats on the legs and we installed. Now the counters are in so it's a little too late but it looks basically unfinished! I chose dull finish based on the sample we did in the store (our cabinets finish isn't remotely shiny and the sample matched well) but now I'm afraid I either used the wrong product (i.e. should have used polyurethane) or that my three coats of dull varnish won't sufficiently protect the wood. Any advice or guidance?
Thanks in advance!!!