Q:

Trying to figure out the relationship between my tables for SQL

I have two tables
Exception which contains
Report Number(Primary Key)
Exception Description
Exception Date Entered
Exception Downtime Hours
Keyword which contains
Keyword(Primary Key)
I can't figure out if this is a one to many relationship or a many to many relationship. I know a Exception can have many keywords but can a keyword have many descriptions? I mean a keyword can be used in more then one report but i'm not sure totally. 
I can add more information if needed i'm just really stumped on which it is.
(For this an exception means a machine broke and needs to be fixed and the keyword is what needs to be fixed)

A:

If Keyword is a primary key it has to be unique i.e. it's a one-to-many relationship.
So in this design a keyword always refers to the same thing.
If a keyword needs many descriptions, then you could have another descriptions table which has a foreign key to the keywords table...

