About: secure operating system

Premodifier: secure operating
Head noun: system

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

Broader concepts

label	provenance	confidence
thing	isap:115238724	0.600357

Narrower concepts

label	provenance	confidence
windows nt	isap:107682075	0.638394
windows xp	isap:108324340	0.629651
windows 7	isap:268134842	0.493269
freebsd	isap:266463200	0.447160
unix	isap:309636038	0.396515
openbsd	isap:265817043	0.387636
windows	isap:268134618	0.374300
linux	isap:158881887	0.364623
vms	isap:210115633	0.272128