Laugh is the first that comes to mind with GH in it. The second that comes to mind is paragraph, which also has graph, both of which have GH in them.
Dough, Rough,
· ghost
Some words ending in GH are:boughcoughdoughenoughhighlaughneighnighroughsighsleighthighthoroughthroughtoughugh
ghost
ghag
Although "gh" has the sound of "f" in some words with "ough" (and "laugh"), the words though, high, and night have a silent gh, the words ghost and aghast have a silent h, and the word bigheartedseparates the pair into two syllables.
laugh
Some words ending with the letters "gh" pronounced as "f" are: rough, tough, enough, cough, laugh.
toughen throughout heighten lighten
ghat, ghee, ghis
there are many through rough though
ugh.
Enough,
4 letter words ending in gh are high and sigh.