dram vs drachm

dram and drachm both are nouns.

Word	Noun	Adjective	Verb	Adverb
dram	Yes	No	No	No
drachm	Yes	No	No	No

As nouns, dram and drachm are synonyms defined as:

dram and drachm: a unit of apothecary weight equal to an eighth of an ounce or to 60 grains

Other synonyms of dram include drachma.

dram (noun)	drachm (noun)
the basic unit of money in Armenia	a unit of apothecary weight equal to an eighth of an ounce or to 60 grains
1/16 ounce or 1.771 grams	a unit of capacity or volume in the apothecary system equal to one eighth of a fluid ounce
a unit of apothecary weight equal to an eighth of an ounce or to 60 grains	a British imperial capacity measure (liquid or dry) equal to 60 minims or 3.5516 cubic centimeters