Ecclesiasticus vs Ben Sira

Ecclesiasticus and Ben Sira both are nouns.

Word	Noun	Adjective	Verb	Adverb
Ecclesiasticus	Yes	No	No	No
Ben Sira	Yes	No	No	No

As nouns, Ecclesiasticus and Ben Sira are synonyms defined as:

Ecclesiasticus and Ben Sira: an Apocryphal book mainly of maxims (resembling Proverbs in that respect)

Other synonyms of Ecclesiasticus include Sirach, Wisdom of Jesus the Son of Sirach.

Ecclesiasticus (noun)	Ben Sira (noun)
an Apocryphal book mainly of maxims (resembling Proverbs in that respect)	an Apocryphal book mainly of maxims (resembling Proverbs in that respect)