About: challenge coin

Premodifier: challenge
Head noun: coin

Same concepts
http://dbpedia.org/resource/Challenge_coin

Broader concepts

label	provenance	confidence
coin	isap:166662142	0.384214
old military tradition	isap:290621269	0.355137
military tradition	isap:290621268	0.333406
metal	isap:90634750	0.240141
tradition	isap:290621267	0.233377

Narrower concepts

label	provenance	confidence