niobium vs columbite
columbite vs niobiumniobium and columbite both are nouns.
| Word | Noun | Adjective | Verb | Adverb |
|---|---|---|---|---|
| niobium | Yes | No | No | No |
| columbite | Yes | No | No | No |
| niobium (noun) | columbite (noun) |
|---|---|
| a soft grey ductile metallic element used in alloys; occurs in niobite; formerly called columbium | a black mineral that is an ore of niobium and tantalum |
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