The phrase "a dichotomy exists" is correct and usable in written English.
You can use it when discussing a division or contrast between two opposing ideas, concepts, or groups.
Example: "In the debate over climate change, a dichotomy exists between those who advocate for immediate action and those who prioritize economic growth."
Alternatives: "a division is present" or "a contrast can be observed".
A dichotomy exists even with marquee stars like Mr. Washington and Mr. Smith.
A dichotomy exists in structural monitoring installations: those with sensors tethered to the data repository with wires, and those which use wireless communication to create a distributed network of sensors.
T-cells, the soldiers of the immune system, have a fundamental role in immune surveillance, and even for these cells a dichotomy exists: a T-cell can defend the host from cancer while aiding tumor growth.
Overall, it is debatable whether a dichotomy exists between homology and homoplasy; some authors have argued that instead these represent extremes on a continuum of degrees of modification (e.g., Hall 2003, 2007).
But he added that the U.S. "can't stay in the current situation," where a dichotomy exists between state and federal law.
We have recently shown that such a dichotomy exists for cemented acetabular cups (Aspenberg et al. 2008).
However, it is unclear whether such a sharp dichotomy exists, as opposed to a more continuous output-market effect that is increasing in market distance and that may work even within national borders.
Such a drastic dichotomy exists between the experimental choreographer-performers Eiko & Koma onstage and Eiko and Koma in life that sometimes it takes effort to remember that they are the same couple.
In summary, a unique dichotomy exists in the leader-led relationship, where followership serves as the yin to leadership's yang.
Moreover, the role of naive and memory T cells in humans during GvHD and GvL is also less clear than in mice, where a clear dichotomy exists and memory T cells do not cause GVHD.
In a crude distinction, some scholars continue to maintain that a static historical dichotomy exists between the nomadic and settled population of the region, one which manifests itself even in present conflict as exemplified by the violent events in Kyrgyzstan during 2010.
