descent noun (RELATION) [ U ] the state or fact of being related to a particular person or group of people who lived in the past: She's a woman of mixed/French descent. They trace their line of descent back to a French duke.
Realistic fiction is fiction that could happen in real life. For example, the fault in our stars is an example of realistic fiction.
They are helping verbs. Your helping verbs are the following:
am been may
is can might
are could must
was shall
were should
be will
being would
