About: quartz crystal

Premodifier: quartz
Head noun: crystal

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

Broader concepts

label	provenance	confidence
mineral	isap:429914792	0.814474
piezoelectric material	isap:48508785	0.742720
material	isap:48508774	0.710028
piezoelectric crystal	isap:429868171	0.682092
crystal	isap:429868154	0.661478
oscillator	isap:244581572	0.654884
birefringent material	isap:48508792	0.621126
stone	isap:34108901	0.549239
element	isap:431306774	0.523158
type	isap:77672012	0.495339
sample	isap:274624252	0.448142
object	isap:274875073	0.441117
part	isap:77288127	0.404230
gem	isap:510972406	0.378345
component	isap:321191458	0.365208
frequency	isap:316130411	0.306500
device	isap:268801540	0.091528

Narrower concepts

label	provenance	confidence
amethyst	isap:342965136	0.458749