Are the words testify and testicle from same origin?

No, the words "testify" and "testicle" are not from the same origin. They have entirely different etymological roots.

* Testify comes from the Latin word "testis," meaning "witness." It evolved through Old French "tesmoigner" and Middle English "testifie."

* Testicle comes from the Latin word "testis," meaning "witness," but it specifically refers to the "witness" to the male sex. The term was chosen because the testicles were believed to be the source of semen, which was considered evidence of a man's virility.

Although they share the same Latin root, the words have evolved independently and developed different meanings.