Simplify the following text for a Grade 10 native English-speaking person.
Original: Abstraction is a process by which higher concepts are derived from the usage and classification of literal ( `` real '' or `` concrete '' ) concepts , first principles , or other methods .
Simplified: Abstraction is a process of removing , or hiding , details about something . It concerns the ways by which higher , less real concepts are derived from the usage and classification of literal ( `` real '' or `` concrete '' ) data or other information .