different between matroid vs graphoid

English

From matrix +? -oid. They were so named by Hassler Whitney in 1935 in an article titled “On the abstract properties of linear dependence”.

matroid (plural matroids)

(combinatorics) A structure that captures the essence of a notion of "independence" that generalizes linear independence in vector spaces and acyclicality in graphs.

From graph +? -oid. 1985, United States.

graphoid (plural graphoids)

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