Diploma

Hi Subham,
Certificates, diplomas, and degrees differ in the time it takes to earn each as well as the credits required in order to graduate. Each of these academic achievements are suitable for certain specific fields or career goals. Diploma and certificate programs taken alone are similar to associate's degree programs. However, they take less time because general education courses are not required. A degree program differs from certificates and diploma programs in that it often requires the student to take general education courses to support a more rounded education. For instance, at many universities, those earning their Bachelor's degree are required to take English, math, Science, philosophy and history.
Certificate Programs
A certificate is earned by a student after taking a series of courses in a particular subject. Students often earn certificates to get a step ahead in the professional field of their interest, and certificates may be offered in similar programs leading to degrees. For instance, there are certificates in business, literature and technical fields. In some technical programs, a certificate may be required. There are also graduate certificates, often taken either alone or alongside a graduate degree program. In some programs, the student may use his or her electives to fulfill a certificate in order to make him or herself more desirable to a potential employer.
Diploma Programs
Diplomas are similar to certificates, and they're often awarded through community or technical schools. For instance, a diploma of nursing is offered as an alternative to an associate's degree or Bachelor's degree. This diploma program is only offered at hospitals with specialty programs that provide training.
Degree Programs
An academic degree can be earned at many levels, including the associate's (two years); Bachelor's (four years); master's (two years beyond a Bachelor's degree); and doctoral, which is several years beyond a master's degree. Earning a degree also opens up more potential doors to a student than a certificate or diploma. Many careers require that the applicant has earned at least a Bachelor's degree; several career options require more than this.
Please feel free to discuss more.
Wish you luck.

Hello Happy Sakar, Thanks for asking,
You can opt government jobs like
IBPS
RRB
SSC and many other.
You can go for RRB Exam because railway is the largest recruiter in India and now a days there are many vacancies in Railway because railway is suffering from staff shortage.
You may check all the updates and upcoming vacancies in Railway Recruitmnet Board in India from: https://scoop.eduncle.com/indian-railways-recruitment-jobs-vacancy
There are many benefits of doing job in Indian Railway like
House allowance
Railway tickets
free health care facilities
Free child care facilities
Job satisfaction
Increment in salary.
RRB Paper is very easy. It came in moderate level.