key relevance
... that key relevance is a locksmithing term that refers to the measurable difference between an original key and a copy made of that key?
... that <b id="mwARQ"><a href="./Key_relevance" id="mwARU" rel="mw:WikiLink" title="Key relevance">key relevance</a></b> is a <a href="./Locksmithing" id="mwARY" rel="mw:WikiLink" title="Locksmithing">locksmithing</a> term that refers to the measurable difference between an original <a class="mw-redirect" href="./Key_(lock)" id="mwARc" rel="mw:WikiLink" title="Key (lock)">key</a> and a copy made of that key?