About: ferrous iron

Premodifier: ferrous
Head noun: iron

Same concepts
http://dbpedia.org/resource/Iron(II)_oxide

Broader concepts

label	provenance	confidence
dissolve metal	isap:92215228	0.729242
metal ion	isap:129647760	0.548489
iron	isap:168748502	0.484669
form of iron	isap:169145950	0.399483
agent	isap:89839677	0.379113
calcium	isap:5355249	0.235790

Narrower concepts

label	provenance	confidence