No, cough is not an adjective. It can be either a noun or a verb.
Yes, "nonproductive cough" does not require a hyphen when used as a noun phrase. However, if used as a compound adjective before a noun, it can be hyphenated as "non-productive cough." Generally, the preferred form is without a hyphen in most medical contexts.
The future tense of cough is will cough.
It is better to live on the hill in Valley Woods, because only people that are poor (that the government knows about) live down among the lake along the flood plain. It would be very foolish to establish ones residence here, but that does not stop some ignoramus' from doing so, *cough**cough**cough*Michael Banfield*cough**cough**cough**cough**cough**cough**cough**cough**cough**cough**cough**cough*
I have a lingering cough. Lingering is an adjective in that sentence. The verb is have.
eat garlic
No he does not *cough* not til i meet him *cough cough* man where i get this cold from *cough* lol
Concentration, Study guide question for SCHOOL. cough cough, *cheater* cough cough
cough cough
Bronchitis often has a colored flam while allergies are clear.
All coughs are symptomatic.
sputum is not what you cough up people cough up mucus
Cough is a verb because you can cough for example the man had to 'cough'.