grep for a process without grep returning grep

Searching for a process with grep, in addition to the search term, the output also includes the grep statement itself:

[email protected]:~$ ps -ef | grep bgp
jemurray  8054 23273  0 19:38 pts/7    00:00:00 grep bgp
jemurray 25310 14989  0 Jul22 pts/2    00:28:29 ./bgpalerter-linux-x64

By putting one of the search term characters between []’s, grep is no longer returned in the results:

[email protected]:~$ ps -ef | grep [b]gp
jemurray 25310 14989  0 Jul22 pts/2    00:28:29 ./bgpalerter-linux-x64

grep

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2020-07-25 14:37 -0500

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