Most of us are confident that human language is reasonably reliable when used to refer to the realm of finite existence. Language is equivocal. Human language cannot refer to the infinite. This route is taken by some mystics and is representative of the via negativa. St. John of the Cross is a good example of one who held this position.
Language is univocal.
There is no problem. Words which refer to God and to humanity have exactly the same meaning. Carl F. H. Henry holds this position. Language is analogical. One can postulate that there is an analogy between what a word means when it applies to humanity and when it applies to God.