What's the difference between sematology and seme?

Sematology

Definition:

• (n.) The doctrine of signs as the expression of thought or reasoning; the science of indicating thought by signs.

Example Sentences:

Seme

Definition:

• (a.) Sprinkled or sown; -- said of field, or a charge, when strewed or covered with small charges.

Example Sentences:

• (1) Seme samples were obtained by masturbation after 3 days of sexual abstinence.
• (2) Seming contradictions to other authors are discussed.