You might use it if (for example) you're sending the same letter to more than one person. If the letter mentions the recipient's name throughout the text - it's easier (and much quicker) to use find and replace - than search for every occurrence.
Use "Find" to locate all instances of a word.
Here's an example:I tried to use the word in a sentence.
A dictionary is a type of book to use to find out how to spell a word.
A thesaurus would be the best reference to find another word for "famished". You can also use online thesaurus tools to quickly find synonyms for any word.
Use a thesaurus
The word penetrating is hard to find a sentence for.
"Solve",
Use "Find" to locate all instances of a word.
Use a dictionary to find the definition of the word dispatch. An atlas is for maps.
There are many places to find the definition of the word giddy. Firstly, you can use an online dictionary by using Google, or you can use an ordinary dictionary.
To measure, or measuring is the use of units to find a size of quantity
Read the context to find possible words; use the word length and shape to find possible letters. If that fails, wing it and substitute a new word.