Covering is a synonym of introductory.
As a noun covering
is (countable) that which covers something.
As a verb covering
is .
As an adjective introductory is
introducing; giving a preview or idea of.
covering
English
Noun
(countable) That which covers something.
(uncountable) Action of the verb to cover .
Verb
(head)
introductory
English
Adjective
(-)
introducing; giving a preview or idea of
Synonyms
* prefatory