How i can merge two list

File1.xml

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>

<wordlist>
        <title>English</title>
        <writer>BASHKIM</writer>
        <word>Father</word> 
        <word>Mother</word>
        <word>Son</word>
</wordlist>

File2.xml

<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<wordlist>
        <title>Spanish</title>
        <writer>BASHKIM</writer>
        <word>Fakhts</word> 
        <word>Moghday</word>
        <word>Sonay</word>
</wordlist>

Above the code is two xml file.i want to combine the two xml file.how i can merge the //worldlist/word of both file? i want output like this. For example: Father-Fakhts Mother-Moghday Son-Sonay