Questions & Answers about Medicul apasă compresa.
They are:
medic = doctor
a apăsa = to press
compresă = compress / pad
In the sentence, medicul and compresa are inflected noun forms, and apasă is a conjugated verb form.
Because -ul is the Romanian definite article for many masculine singular nouns.
So:
medic = a doctor / doctor
medicul = the doctor
Unlike English, Romanian usually puts the at the end of the noun instead of using a separate word.
Compresă is the basic, indefinite form: a compress / a pad.
When it becomes definite, Romanian adds the article to the end:
compresă → compresa = the compress / the pad
So the final -ă changes to -a in the definite singular form.