Among the words that were very popular in the Middle Ages and went out of circulation, you can find those that, having only slightly changed the meaning, are used now. For example, the word "rooms" is a rather ambiguous concept; initially it implies several rooms intended for living or temporary stay of a person.
Medical term
Such a medical concept as the admission department is probably familiar to everyone, because everyone was there under different circumstances. Ward is the second name of the ward, the place from which the hospitalization of any patient begins and his direction in any ward. Patients referred by a doctor or those brought by an ambulance come to this place. Those who suffered in an accident go there. It is in this place that the patientβs medical history starts, and his anthropological data are recorded there: weight, height and other measures. Among other things, an initial examination is also held here.

The meaning of the word "chambers" is diverse. In the case of the admission department, the appointment of a place implies a set of procedures and examinations that prepare a person for hospitalization. For example, a patient may be washed there if he needs urgent surgery. In such places, multidisciplinary personnel are often able to determine who and where to send in case of ambulance delivery. This place is the main distributor and registrar of patients.
Literary term
If from a medical point of view, everything is clear to a modern person, then from a literary and historical point of view, itβs not very clear. If in the literature the dormitory is a fairly common concept, then in history it can be found not often, but the meaning will be the same.
What are
For those who love books, especially the fantasy genre about parallel universes and the Middle Ages, this concept is not something new. A room is a single room or a complex of rooms intended for housing or temporary stay. Most often, the term refers to richly decorated rooms intended for noble people. If we talk about chambers in which there are several rooms, then everything depends on how rich the owner is, and for whom the rooms are intended.
For example, the royal chambers are a network of rooms, in which there must be a living room, a bedroom, an office and a bathroom, a dressing room is possible. This set is due to the nature of the activity of the visitor or owner, it is worth considering that in the master's chambers there was always a personal office. Guest chambers most often consist of a bathroom, a living room and a bedroom. In any case, the living room is necessary for meeting visitors so that they do not fall directly from the corridor into the bedroom.
There are not so many such words that have come down to our time with an already changed meaning, much more new ones. But for general development, you need to know them, if only in order to understand what the interlocutor is talking about or is written in the book.