"rusts" in the noun sense
a red or brown oxide coating on iron or steel caused by the action of oxygen and moisture
a plant disease that produces a reddish-brown discoloration of leaves and stems caused by various rust fungi
3. rust, rusting
the formation of reddish-brown ferric oxides on iron by low-temperature oxidation in the presence of water
4. rust, rust fungus
any of various fungi causing rust disease in plants
"rusts" in the verb sense
1. corrode, rust
become destroyed by water, air, or a corrosive such as an acid
"The metal corroded"
"The pipes rusted"
2. corrode, eat, rust
cause to deteriorate due to the action of water, air, or an acid
"The acid corroded the metal"
"The steady dripping of water rusted the metal stopper in the sink"
become coated with oxide
Source: WordNet® (An amazing lexical database of English)
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