Is a barky cough always indicative of croup?

My3.5 year old has been sick and the worst of it was over a week ago. Of course there's the lingering cough. Tonight it seems to be acting up more and sounds barky at times. I know a barky cough is usually associated with croup.

Just put some vapor rub on her soles and tried zarbees because she can't seem to stop coughing for more than one minute.
Her cough had gotten a lot better during the day.