Need expert help here. what are the symptoms of lung cancer and emphysema?

Subtle: Initially lung cancer may be asymptomatic. Eventually both can cause cough, dyspnea, weight loss. Cancer can spread and can cause pain, fractures or symptoms related to organs where it spreads. I can cause coughing up blood more so than emphysema. It is best to have it worked up and diagnosed than to surmise from differences and similarities. Risks are same for both.

Cough/chest pain: Symtoms are non specific and include cough, shortness of breath, chest pain, coughing up blood, weight loss to name a few. A medical evaluation including radiography(chest x-ray ad possible ct), pfts and physical assessment.