The phrase "exists in different forms" is correct and usable in written English.
You can use it to indicate something that can take on different shapes or forms. For example, "Love exists in different forms and can manifest in many ways."
Art exists in different forms.
It exists in different forms across the Gulf.
Iron is allotropic that is, it exists in different forms.
CAS exists in different forms.
Though OfferBoard exists in different forms for each client and use case, it is that infrastructure in its simplest form.
"Rugby for young people at schools or clubs in England exists in different forms, both contact and non-contact.
And Harcourt Brace, the parent company of the Psychological Corporation, makes the Stanford Achievement Test, which has existed in different forms for nearly 80 years and is widely used throughout the country, including, in an augmented version, as California's state test.
CNTs exist in different forms depending upon the orientation of hexagons in the graphene sheet and possess a very high aspect ratio and large surface areas.
The aggregates in the phases can exist in different forms including spherical micelles, rodlike micelles or vesicles by simply using different surfactant concentrations and compositions (Weschayanwiwat et al. 2008).
Iron oxides exist in different forms in nature, magnetite, maghemite, and hematite [1] Maghemite is ferrimagnetic at room temperature but maghemite nanoparticles smaller than 10 nm are superparamagnetic at room temperature, maghemite is unstable at high temperatures, and loses its susceptibility with time [2, 3].
Obviously, the accumulation of wealth has always existed in different forms, especially since the agricultural revolution about 10,000 years back.
