Conjugation is a very long word, isn't it? In grammar, when you conjugate a verb, it just means that you change the verb in order for a sentence to make sense. Correctly conjugated verbs communicate ...
Let's face it, between all those conjugations and unfamiliar tenses, French verbs can be a pain in the derrière for beginners. On top of that, some of them are just plain weird with changes in meaning ...