The phrase "are essentially different" is grammatically correct and commonly used in written English.
It is typically used to highlight significant differences between two or more things or concepts. Here is an example: "Although both dogs and cats are domestic pets, their behaviors and personalities are essentially different."
As the boundaries between philanthropy and business continue to blur with the rise of venture philanthropy, social enterprise and other "hybrid" philanthropic models, the assumption that nonprofits and for-profit businesses are essentially different and should be operated differently becomes more difficult to defend.
Despite a lack of empirical evidence, a cottage industry has emerged working the "boys and girls are essentially different, so we should educate them differently" angle.
Note that the equations developed here for the Ca2+-CaM complexes are essentially different from the Michelis-Menten, Hill and Adair models, and also differ from models with independent binding sites (5) or with limited amounts of cooperativity (11) and (12).
Also, softball has suffered from guilt by association with baseball, although they are essentially different sports.
"The general consensus among those of us in authority is that teenagers are essentially different from us "normal" humans.
"A lot of female geeks really object to the idea that women and men are essentially different.
Among advocates of single-sex public education, there are two camps: those who favor separating boys from girls because they are essentially different and those who favor separating boys from girls because they have different social experiences and social needs.
It is about children who are essentially different than their parents — there is a chapter on transsexual children and their families but an overarching question he raises is when and whether parents have a moral right to make certain choices for their minor children.
These two settings are essentially different.
Therefore Matkowski contractions and Boyd-Wong contractions are essentially different.
Traffic flows are essentially different from flows in other engineering areas.
