Check out example codes for "mysql does sentence contain word". It will help you in understanding the concepts better.

Code Example 1

#select rows where myColumn has the actualy word (not just the string)
#ie: the word has a space on one side of it
SELECT * FROM myTable WHERE myColumn  
like 'myWord' 
or myColumn like  'myWord %'
or myColumn like '% myWord'
or myColumn like '% myWord %';

Code Example 2

SELECT *
FROM myTable 
WHERE myColumn REGEXP '[[:<:]]myword[[:>:]]'

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