The meaning of the term functionality is that an object of any kind is well suited to properly function and work for the purpose the object was created for.
I believe that the word you are looking for is "functionality."
Skype
Sort of joke (or figurative speech) of your teacher, the meaning is: programs with similar/related functionality. They are: interpreter, assembler.
Syncope is the medical term meaning fainting.
Anacusis is the medical term meaning complete deafness.
The term is Brevis, meaning shortest.
What is the meaning of the term "arms race
What is the meaning of the term "arms race
Flexion is the medical term meaning bending
Sensation is the medical term meaning feeling.
Eructation is the medical term meaning burping.eructation
Os is the zoology term meaning mouth.