lever scale vs steelyard

lever scale and steelyard both are nouns.

Word	Noun	Adjective	Verb	Adverb
lever scale	Yes	No	No	No
steelyard	Yes	No	No	No

As nouns, lever scale and steelyard are synonyms defined as:

lever scale and steelyard: a portable balance consisting of a pivoted bar with arms of unequal length

Other synonyms of lever scale include beam scale.

lever scale (noun)	steelyard (noun)
a portable balance consisting of a pivoted bar with arms of unequal length	a portable balance consisting of a pivoted bar with arms of unequal length