I'm reading A Practical Public Key Cryptosystem Provably Secure against Adaptive Chosen Ciphertext Attack and here define Semantic Security ...
Semantic security, dened by Goldwasser and Micali , captures the intu- ition that an adversary should not be able to obtain any partial information about a message given its encryption. However, this guarantee of secrecy is only valid when the adversary is completely passive,
but in the abstract of other paper Semantically Secure McEliece Public-Key Cryptosystems –Conversions for McEliece PKC say
we propose slightly modiﬁed versions of McEliece PKC that can be proven, in the random oracle model, to be semantically secure against adaptive chosen-ciphertext attacks.
I'm confusing Why if semantic security is for passive attacks exists the term "secure against adaptive chosen-ciphertext attacks", when Adaptative Chosen ciphertext attack is a model to active attacks?