1. Canon Law. A variety of disciplinary and administrative laws can change as situations warrant. Obviously, laws which have nothing to do with faith and morals do not involve infallibility, but the Church cannot enact laws which tend toward the loss of souls (such as the new laws of the Conciliar church which specifically allow sacrilege).
2. Ecuмenical Councils in communion with the pope are infallible in matters of faith and morals. If this is what you mean is not infallible, then you are a heretic and are outside the Catholic Church.
3. The liturgy is infallible. Pope St. Pius V codified the Roman Missal because of the heresies in the West which were perverting the liturgy.
You made some good distinctions, but more distinctions are necessary. This was my point. Canon law is, by definition, church law, which isn't made by humans. It isn't infallible, unless specifically related to faith/morals, which it normally is not concerned with. It is normally concerned with the running of the govt aspect of the church, which is a human affair.
Council docuмents are not infallible, unless dealing with faith/morals/dogma and even then, only the specific STATEMENT, infallibly pronounced, is infallible, not the entire docuмent. "We declare, define and pronounce..." All else is fallible, or could be.
The liturgy, as explained by Pius XII in 'mediator dei' is both human and divine origin, so it is not 100% infallible. The genuflection during the Credo was an addition to the liturgy by a King. That's a human addition; not infallible. There are many such additions to the liturgy over the centuries. Many are beautiful and spiritual. But they have nothing to do with infallibility, because the liturgy doesn't teach doctrine, explicitly.
The original post by "Lover of Truth" said that Canon Law, Councils and the Liturgy, are all infallible.
This is not true at all. It is an over generalization and leads to confusion. Now, if we add in your distinctions, then we are coming closer to the truth.
Really, I don't need to enumerate distinctions but just point to Vatican I and if the matter in question does not fulfill the 4 requirements, then the statement isn't infallible. It's that simple.