cgs system vs metric system

cgs system and metric system both are nouns.

Word	Noun	Adjective	Verb	Adverb
cgs system	Yes	No	No	No
metric system	Yes	No	No	No

As nouns, metric system is a hypernym of cgs system; that is, metric system is a word with a broader meaning than cgs system:

cgs system: system of measurement based on centimeters and grams and seconds
metric system: a decimal system of weights and measures based on the meter and the kilogram and the second

cgs system (noun)	metric system (noun)
system of measurement based on centimeters and grams and seconds	a decimal system of weights and measures based on the meter and the kilogram and the second