I don't think words kill ,. but we seem to live in a killing joke , so i have doubts about the statement being false completely .

Give me an Example. You mean when words made someone killing? What would you derive from that?

But not always , water can freeze or cook , states that it does not feel wet .

A chemist, for example, would say that both statements are imprecise, he would perhaps say:
‘Water is liquid as long as it is not in a different state of aggregation.’