I will say social science is a scientific study of human society and social relationships. The aim of Social science is to go beyond and tells us about the world beyond our immediate experience, and can help explain how our own society works. For how it differs, depends on the subject within the field of social science such as Sociology, Economics or Geography.
Bhattacherjee A. Social Science Research: Principles, Methods, and Practices, 2nd edition. University of South Florida, Tampa, Florida, USA. 2012. http://scholarcommons.usf.edu/cgi/viewcontent.cgi?article=1002&context=oa_textbooks
RITCHIE J, LEWIS J. QUALITATIVE RESEARCH PRACTICE: A Guide for Social Science Students and Researchers. London, Thousand Oaks, New Delhi: SAGE Publications. 2003. http://www.sxf.uevora.pt/wp-content/uploads/2013/03/Ritchie_2003.pdf
The definition of social science is the study of people and their relationships and interactions in society.
Branches of Social Science
Anthropology - the study of the cultural, social, and physical development of humans
Economics - the study of the ways in which a society deals with money and the availability of goods
History - the study of man’s past and his decisions in order to find relationships between the events and causes for them.
Political science - the study of the processes and principles of government and other political institutions
Psychology - the study of the mind’s functions as they relate to one’s physical and social environment
Sociology - the study of of social behavior and societies
Education - the study of how people gain knowledge
Geography - the study of the Earth and the way humans are dispersed on it
Law - the study of the rules that society lives by and how they are formed or influenced by popular beliefs
Linguistics - the study of the structure of language, its syntax, phonology, semantics, phonetics, morphology, and the nature of language and its variations
Criminology - the study of the criminal behavior of both individuals and of society
Archaeology - the study of past civilizations, with information gleaned from material remains, such as, artifacts, buildings, graves, etc
Religion - the relationship between humans and God or gods
An example of social science is a group of anthropologists digging up clay water pots from an ancient Egyptian marketplace.
Read more at http://www.yourdictionary.com/social-science#LRTGx8AuighUbMrl.99
Social science is nothing but the reflection of Knowledge,guideline ,information family & social background information regarding the pass record of development such other areas which may be not only an information but a guideline for every human beings in whatever the career or position they may be enjoying .
find in https://www.merriam-webster.com/dictionary/social%20science
1: a branch of science that deals with the institutions and functioning of human society and with the interpersonal relationships of individuals as members of society
2: a science (such as economics or political science) dealing with a particular phase or aspect of human society
Social science tells us about the world beyond our immediate experience, and can help explain how our own society works - from the causes of unemployment or what helps economic growth, to how and why people vote, or what makes people happy. It provides vital information for governments and policymakers, local authorities, non-governmental organisations and others.