Different words for one thing

I just created some cool words in Wamen, my new
conlang, that I'd like to share, since they show something
that called my attention after the mandatory possession
thread and related stuff.

The words in question are two pairs, meaning 'water'
and 'fish'.

u    [u]      'drinkable or flowing water'
huti ['PutSi] 'undrinkable water, unmoving dirty water'

joki ['joki]  'a fish (alive and/or swimming)'
fury ['furi-] 'a fish (dead and/or served as food)'

The issue is: different names for the same thing when
it's not quite the same. Do any of your conlangs or natlangs
do this? As for Spanish, we have _pez_ and _pescado_ for
the types of 'fish' above, but there's a common root there;
_pescado_, being a noun, is the same as the passive participle
of _pescar_ 'to fish'.

As for Drasel=E9q, I have _fang_ 'right hand' and _dhung_ 'left hand',
but the same word for both feet, eyes, etc., more or less the way
that Spanish uses _dedo_ for both 'finger' and 'toe'.

So, do you have any examples? How do you handle general statements?


--Pablo Flores
  http://draseleq.conlang.org/pablo-david/