Refresh rate is most noticeable a RR of 60Mhz looks like *bip*. your eyes will not like it,but 60fps is ok. But fps in games are not just eye candy,it has impact on gameplay.25fps is not a playable speed it may fool you eyes in movies but it will not do in games.
In linguistics and grammar, a pronoun (abbreviated PRO) is a word that substitutes for a noun or noun phrase. It is a particular case of a pro-form.
any of a small class of words used as replacements or substitutes for nouns and noun phrases, usu. referring to persons or things mentioned in or understood from the context and having very general reference, as I, you, he, she, them, this, who, what. Abbr.: pron. pronom prÅnÅmen (s.