1.
textbook
A book used for study in a particular subject.
テキスト from English "text" has two main meanings in Japanese.
Usage
1. Textbook: A book used for study (synonym: 教科書)
2. Text: Written content, especially in digital contexts
COMMON EXPRESSIONS (textbook):
COMMON EXPRESSIONS (digital text):
Similar words
In educational contexts, テキスト sounds slightly more casual than 教科書 (official textbook).