Or in common usage, as per a thesaurus:
Words can have more than one meaning.
The trouble with the Thesaurus is that it gives all possible variations in alternate words but totally devoid of context. In language, context is so often what dictates our choice from a possible list of words. If your premise that the thesaurus allows the use of any words devoid of context then all the words you provide are pertinent to these photographs - unreal, bizarre, unusual, weird, strange, freakish, unearthly, uncanny, dreamlike, phantasmagorical.
Perhaps you are right these photos are freakish. Indeed they might be uncanny. They are definitely bizarre.
In a forum devoted to photography as art the context is clear and any student of art has a very clear understanding of what surreal means.