The phrase "a contrast exists" is correct and usable in written English.
It can be used when discussing differences between two or more subjects, highlighting that a distinction is present.
Example: "In the study, a contrast exists between the results of the two experiments, indicating different outcomes based on the variables used."
Alternatives: "a difference is present" or "a distinction can be observed".
In addition, Hayden noted that a contrast existed between the work activities of regular workers and NBA players, as perceived by typical employees, and that "the NBA lockout may have strengthened the view of many that unions are out of touch with their lives and thus have little to offer them".
A phonemic contrast exists between short and long vowels, and words have simple syllable structure.
In contrast, under wet conditions, a strength contrast exists from 4 to 3 Ga, indicating that decoupling may have occurred between the crust and mantle in the past North Pole.
A stark contrast exists between what you have said and what your negotiators in Doha are doing.
A striking contrast exists within the O. dioica genome between the basic compact structure of most of the genome and the structure of the Y chromosome which shows very large introns in the genes housed within this chromosome (Denoeud et al. 2010).
It is worth mentioning that clear ambient noise HVSR peaks occur when a significant velocity contrast exists at some depth.
The 3D subducting PHS restricts the centroid depths to depths ranging above the oceanic Moho of the PHS, where a steep velocity contrast exists.
Alas, an even more valid contrast exists with the two Rachel Dawes character in Nolan's Batman pictures.
A possible threat to achieve sufficient contrast exists when (unstructured) family counseling will become part of the usual care in some participating centers.
Absolute enmity, by contrast, exists wherever there is a conflict that is not amenable to territorial settlement.
