Usage patterns
〈物〉を骨董品として集めるto collect something as an antique
My grandfather collected old clocks as antiques.
骨董品を鑑定するto appraise an antique
I had an expert appraise whether that vase was a genuine antique.
骨董品市an antique market/fair
There's an antique market this weekend, so I'm thinking of going to see it.