similarity match for cooling and air condition is zero

[lokeshkumarn]

similarity match for cooling and air condition is zero

wns.word_similarity('cooling','air_condition','li')
0

[hopple]

If the word is out of vocabulary, similarity computation returns 0.
You can use wns.word2synset to check.
In your case, the 'air_condition' should be 'air_conditioner'.
wns.word2synset('air_conditioner') returns air_conditioner.n.01
and wns.word_similarity('cooling', 'air_conditioner', 'li') returns 0.8186