What's the difference between sprigger and stemmer?

Sprigger

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Definition:

Example Sentences:

Stemmer

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Definition:

• (n.) One who, or that which, stems (in any of the senses of the verbs).

Example Sentences:

• (1) And there’s a party called Niet Stemmers (Non-Voters) for the 25% of Dutch voters who are expected to abstain.
• (2) The following signs and symptoms were constantly reported: "Egyptian column", elastic edema, negative Stemmer's sign, alterated plantar support, cutaneous hypothermia.