Difference between Only and Simply

Only

Part of speech: adverb

Definition: without others or anything further; exclusively no more than; just as recently as

Part of speech: adjective

Definition: singular; part of a relatively small number without sibling; without a sibling of the same gender singularly superior; the best

Part of speech: conjunction

Definition: Under the condition that; but. However. But for the fact that; except.

Example sentence: Darkness cannot drive out darkness; only light can do that. Hate cannot drive out hate; only love can do that.

Simply

Part of speech: adverb

Definition: In a simple way or state; considered in or by itself; without addition; alonePlainly; without art or subtlety; clearly; obviously; unquestionably.Weakly; foolishly; stupidly.merely; solely.absolutely, positively.Frankly.

Example sentence: Be not simply good - be good for something.