Existence is what is asserted by the verb 'exist' (derived from the Latin word 'existere', meaning to appear or emerge or stand out). The word 'exist' is certainly a grammatical predicate, but philosophers have long disputed whether it is also a logical predicate.Some philosophers claim that it predicates something called 'existence' of the subject. Thus 'four-leaved clover exists' predicates 'exists' of the subject 'four-leafed clover'. Cognates for this predicate are 'is real', 'has being', '