Realiamodels is likely misspelled.
Realiamodels has no English definition.
As a noun mockup is
a prototype, usually low-fidelity, such as paper illustrations, screenshots, or simple configurations of screens with limited interaction.
realiamodels
Not English
Realiamodels has no English definition. It may be misspelled.
mockup
English
Noun
(
en noun)
A prototype, usually low-fidelity, such as paper illustrations, screenshots, or simple configurations of screens with limited interaction.