Is hockey stick a common noun?

Answer 1

Yes, the word 'stick' is a common noun, a word for any stick of any kind, anywhere.

A proper noun is the name of a specific person, place, thing, or a title; for example:

• Clinical Professor Stephen Stick, Clinical Professor, School of Pediatrics and Child Health at the University of Western Australia
• Stick School Road, Glen Rock, PA or South Stick City Road, Muncie, IN
• Stick-Inn (yarn boutique), Helsingborg, Sweden
• "Stick", a novel by Andrew Smith

Answer 2

Yes, the compound noun 'hockey stick' is a common noun, a general word for any hockey stick.