What's the difference between roamer and roarer?

Roamer

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Definition:

• (n.) One who roams; a wanderer.

Example Sentences:

• (1) The transposons causing the mutations are: P element (5 alleles), gypsy (3 alleles), 17.6, HMS Beagle, springer, Delta 88, prygun, Stalker, and a new mobile element which was named roamer (2 alleles).

Roarer

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Definition:

• (n.) One who, or that which, roars.
• (n.) A riotous fellow; a roaring boy.
• (n.) A horse subject to roaring. See Roaring, 2.
• (n.) The barn owl.

Example Sentences: