I was reading this article (https://angular.io/guide/component-interaction#top) and i came across this section and i noticed they use terms Parent , child and family a lot .
for example here :
Parent and children communicate via a service
A parent component and its children share a service whose interface enables bi-directional communication within the family.
What makes two component part of the "family" ?Are all components of angular parts of one big family ? Or is there something that defines them as members of the same ?