lode vs alluviation

lode and alluviation both are nouns.

Word	Noun	Adjective	Verb	Adverb
lode	Yes	No	No	No
alluviation	Yes	No	No	No

As nouns, alluviation is a hypernym of lode; that is, alluviation is a word with a broader meaning than lode:

lode: a deposit of valuable ore occurring within definite boundaries separating it from surrounding rocks
alluviation: the phenomenon of sediment or gravel accumulating

Other hypernyms of lode include deposit, sedimentation.

lode (noun)	alluviation (noun)
a deposit of valuable ore occurring within definite boundaries separating it from surrounding rocks	the phenomenon of sediment or gravel accumulating