The phrase "unbreakable bond between" is correct and usable in written English.
You can use it when you want to describe a strong, lasting connection between two or more people, groups, ideas, etc. For example: The two sisters had an unbreakable bond between them that lasted their entire lives.
Obama renewed the "unbreakable bond" between the two countries.
Flitting around several decades, it explores the regrettably unbreakable bond between gang members.
Interviews with women entrepreneurs confirm the existence of an unbreakable bond between female entrepreneurs and their families.
Obama has urged Republicans not to "politicize" the U.S.-Israeli relationship, stressing the "unbreakable bond" between the two countries.
The issue is gaining traction even among US academic bodies, previously thought impervious due to the oft cited "unbreakable bond" between the two countries.
While the surface subject matter – the end of the world – may be miserable, there is a clear and burning note of hope in the unbreakable bond between father and son which was always at the core of McCarthy's source.
"I see this visit as an opportunity to reaffirm the unbreakable bonds between our nations," he said.
He talks of wartime alliances and unbreakable bonds between Australia and PNG, and anticipates that these will continue into the future.
Yet, Bearded Villains' members insist it has become more than that: a lifestyle, or even a movement, set out to correct and play around with outdated stereotypes while building unbreakable bonds between men worldwide.
Our ancestors explored the world together, and our grandfathers went into battle together, as do our kith and kin today — and this leaves deep, unbreakable bonds between the peoples of these islands".
Though we may disagree with the White House at certain stages of the peace process, we must never allow such differences to obscure the purpose we share or to raise doubts about the unbreakable bonds between us.
