What's the difference between flaggy and slaggy?

Flaggy

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Definition:

• (a.) Weak; flexible; limber.
• (a.) Tasteless; insipid; as, a flaggy apple.
• (a.) Abounding with the plant called flag; as, a flaggy marsh.

Example Sentences:

Slaggy

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Definition:

• (a.) Of or pertaining to slag; resembling slag; as, slaggy cobalt.

Example Sentences:

• (1) Others are just laughing at someone who's poor and slaggy."