premeditate vs deliberate

premeditate is not an adjective while deliberate is an adjective.

Word	Noun	Adjective	Verb	Adverb
premeditate	No	No	Yes	No
deliberate	No	Yes	Yes	No

As verbs, deliberate is a hypernym of premeditate; that is, deliberate is a word with a broader meaning than premeditate:

Other hypernyms of premeditate include consider, debate, moot, turn over.

premeditate (adjective)	deliberate (adjective)
	carefully thought out in advance
	unhurried and with care and dignity
	characterized by conscious design or purpose

premeditate (verb)	deliberate (verb)
consider, ponder, or plan (an action) beforehand	discuss the pros and cons of an issue
think or reflect beforehand or in advance	think about carefully; weigh