How to search for occurrences from a list of phrases in linux?

Question

linux

Let's say there are two files.
In one file, a list of words.
The second has a large list of strings.
How in bash to implement a search for occurrences from a list of words in the first file without having to insert each word into grep by hand?

Answer 1

while read; do grep "$REPLY";done<file1

Answer 2

awk
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