fathom vs excavation

fathom and excavation both are nouns.

Word	Noun	Adjective	Verb	Adverb
fathom	Yes	No	Yes	No
excavation	Yes	No	No	No

fathom (noun)	excavation (noun)
a linear unit of measurement (equal to 6 feet) for water depth	the act of extracting ores or coal etc from the earth
(mining) a unit of volume (equal to 6 cubic feet) used in measuring bodies of ore	the act of digging
	a hole in the ground made by excavating
	the site of an archeological exploration

fathom (verb)	excavation (verb)
measure the depth of (a body of water) with a sounding line
come to understand