Oh man, Greek loves compound words, so it's pretty common to see roots squished together and it's hard to tell what constitutes a "word." (Looking something up in the dictionary is something of an art form and I'm no good at it yet.) My dictionary, at least, has these roots:

φιλία [philia] "friendship"
ἔρως [eros] "sexual desire"
ἀγάπη [agape] "(non-sexual) love"
στοργή [storge] "affection" (esp. parents for childen, etc.)

And then it's common to combine words to get more specific:

φιλ-αδελφία [philadelphia] "love for a brother"
φιλ-ανδρία [philandria] "love for a husband"
etc.