The Staff called "chabal"
The word "chabal" (חָבַל) is actually the name given to the staff, see Zechariah 11:7 "So I fed the flock for slaughter, in particular the poor of the flock. I took for myself two staffs: the one I called Beauty, and the other I called Bonds; and I fed the flock."[NKJV] as this is the name of the staff the punctuation of the ESV isn't helpful. Other Translations seem clearer
"Then I cut in two my other staff, Bonds, that I might break the brotherhood between Judah and Israel."[NKJV]
"Then I cut my second staff, Union, in pieces, to break the brotherhood between Judah and Israel."[NKJV]
"Then I broke my second staff—the one I had named "Union"—breaking the union between the house of Judah and the house of Israel."[ISV]
The Translation of "chabal" in Zech 11:14 from various English versions
Several versions translate "chabal" (חָבַל) as union, including the ISV, KJV(2000) & NASB. The KJV uses "bands" (as does Young's literal translations and the Darby Translation), NKJV uses "bonds", NET uses "Binders" and the Douay-Rheims uses 'cord'.
These words all seem to convey the same sense, i.e. of a close bond and unity. Judah and Israel are bound together, but the staff has been broken in two destroying that unity.
The translation of "chabal"
"Chabal" (חָבַל) has a wide range of meanings. In Zechariah 11:14 though we actually have the word חֹבְלִים ("chobelim") from the root "chabal". This term is used only twice in the Bible, both occasions in regards to this staff, and the lexicons suggest that 'union' is the best translation:
†חֹבְלִים S2256 TWOT592b GK2482 n.[m.]pl. union (lit. binders) name of
Zec.’s second symbolic staff Zc 11:7 and c. art. v 14. See חָבַל 1.
Brown, F., Driver, S. R., & Briggs, C. A. (2000). Enhanced
Brown-Driver-Briggs Hebrew and English Lexicon (electronic ed., p.
287). Oak Harbor, WA: Logos Research Systems.
2482 חֹבְלִים (ḥō·ḇelîm): n.[masc.]; ≡ Str 2256; TWOT 592b—LN
63.1–63.4 pl. Union, i.e., the concept of unity, oneness, and reunification as one to a socially and politically divided kingdom
(Zec 11:7, 14+), note: this is the symbolic name of a staff in an
Swanson, J. (1997). Dictionary of Biblical Languages with Semantic
Domains : Hebrew (Old Testament) (electronic ed.). Oak Harbor: Logos
Research Systems, Inc.