Hello ,
Both the degrees are good.

Bsc cardiology
A 3 year course and involves all the test and procedures related to heart such as ECG, Angioplasty, Angiography, pericardiocentesis,Stress test,Holter monitor,etc
As a cardiovascular technician, you have the choice to administer either invasive or noninvasive procedures
The average salary of BSc Cardiology graduates is generally 30,00040,000 INR per month but it can vary as per the hospital or health center or depending on your skills .

Bsc Pathology
Pathology is an amazing branch.
There are various branches of pathology in medical science anatomical pathology and clinical pathology, and smaller branches such as forensic pathology, veterinary pathology, molecular pathology, surgical pathology, hematopathology.
You should prefer to work in a lab behind a microscope instead of interfacing with patients all day.
You should be ready do work 24/7 as patho lab technician.
Average salary after graduation in various hospitals , laboratories is 25000 to 35000 depending upon your skills , experience and knowledge .

Check out following links https://www.careers360.com/courses/pathology-course

Thank you