Preposition
Preposition - specificies the positional relationship of two nouns.
Example: Sam is on the bridge.
- The submenu lies under the menu.
- The definition appears next to the term.
- The
print function falls within the main routine.
Other prepositions answer the question, "When is this event relative to that other event?" For example:
- The program evaluates the addition operation before evaluating the subtraction operation.
- The cron daemon executes the script every Tuesday at noon.
A few prepositions (for example, by and of) answer other kinds of questions about relationships. For example, the following sentence uses by to relate a book to its authors:
- The C Programming Language by Kernighan and Richie remains popular.
Note: Some English words fall into multiple grammatical categories.
For example,
under is usually a preposition,
but context affects the sentence
meaning under can also serve as an adverb or adjective depending on context.