Dross vs. Slag

Dross and Slag Definitions
Dross
Waste or impure matter
Discarded the dross after recycling the wood pulp.
Slag
The vitreous mass left as a residue by the smelting of metallic ore.
Dross
The scum that forms on the surface of molten metal as a result of oxidation.
Slag
See scoria.
Dross
Worthless, commonplace, or trivial matter
"He was wide-awake and his mind worked clearly, purged of all dross" (Vladimir Nabokov).
Slag
To change into or form slag.
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Dross
Waste or impure matter.
Slag
Waste material from a mine.
Dross
Residue that forms on the surface of molten metal from oxidation.
Slag
Scum that forms on the surface of molten metal.
Dross
The impurities in metal.
Slag
Impurities formed and separated out when a metal is smelted from ore; vitrified cinders.
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Dross
A waste product from working with metal.
Slag
Hard aggregate remaining as a residue from blast furnaces, sometimes used as a surfacing material.
Dross
(figurative) Worthless or trivial matter.
Slag
Scoria associated with a volcano.
Dross
(transitive) To remove dross from.
Slag
A coward.
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Dross
The scum or refuse matter which is thrown off, or falls from, metals in smelting the ore, or in the process of melting; recrement.
Slag
A contemptible person, a scumbag.
Dross
Rust of metals.
Slag
A prostitute, or a woman who acts like one; a slut.
Dross
Waste matter; any worthless matter separated from the better part; leavings; dregs; refuse.
All world's glory is but dross unclean.
At the devil's booth are all things sold,Each ounce of dross coats its ounce of gold.
Slag
(transitive) To produce slag.
Dross
Worthless material that should be removed;
There were impurities in the water
Slag
(intransitive) To become slag; to agglomerate when heated below the fusion point.
Dross
The scum formed by oxidation at the surface of molten metals
Slag
(transitive) To reduce to slag.
Slag
To talk badly about; to malign or denigrate (someone).
Slag
To spit.
Slag
The dross, or recrement, of a metal; also, vitrified cinders.
Slag
The scoria of a volcano.
Slag
A product of smelting, containing, mostly as silicates, the substances not sought to be produced as matte or metal, and having a lower specific gravity than the latter; - called also, esp. in iron smelting, cinder. The slag of iron blast furnaces is essentially silicate of calcium, magnesium, and aluminium; that of lead and copper smelting furnaces contains iron.
Slag
To form, or form into, a slag; to agglomerate when heated below the fusion point.
Slag
The scum formed by oxidation at the surface of molten metals