What is a first cousin once removed? (As the joke goes Can a cousin, once removed, be returned?) Is it the same as a second cousin? The short answer is No, they're not the same thing.. Let's take a look at what those cousin terms mean and how you can figure them out in your family tree. Terms like first cousin and second cousin refer to what I call the degrees of cousin-ness.. It's an indication of how close the common ancestor is to them.
http://www.archives.com/blog/genealogy-help/second-cousins-and-removed-cousins-difference.html
The result is the relationship of the second person to the first. For example, say the first person is the grandchild of the common ancestor, and the second person is a great-grandchild. Therefore, the second person is the first cousin once removed from the first. There is of course a pattern to all of this.
https://flowingdata.com/2014/11/05/chart-of-cousins/
First, Second and Third Degree Relative. A first-degree relative is defined as a close blood relative which includes the individual's parents, full siblings, or children. A second-degree relative is defined as a blood relative which includes the individual's grandparents, grandchildren, aunts, uncles, nephews, nieces or half-siblings. A third-degree relative is defined as a blood relative which includes the individual’s first-cousins, great-grandparents or great grandchildren.
http://www.bcbst.com/mpmanual/First_and_Second_Degree_Relative.htm
Second-degree blood relatives are uncles, aunts, nephews, grandchildren, grandparents and half-siblings. Second-degree blood relatives share approximately 25 percent of their genes with one another. Moreover, in the United States, first cousins, first cousins once removed and first cousins twice removed are considered second-degree blood relatives. Third-degree blood relatives are great-grandparents or great-grandchildren. Approximately one-eighth of genetic material is shared between third-degree blood relatives.
https://www.reference.com/family/considered-blood-relative-c912e439038a6c2
A strong family history - if two or more first-degree relatives (mother or sister) had breast cancer before the age of 50, or four or more first or second-degree relatives (aunt or grandmother) had it at any age. Second-degree relatives - cousins, nieces, nephew, aunts and uncles - should be between 3 and 20. Attention should be called to the apparent greater association with learning disabilities of learning problems in first- and third-degree relatives than with learning problems in second-degree relatives.
http://medical-dictionary.thefreedictionary.com/second-degree+relatives
Example: If person one’s great-great-great-grandfather is person two’s grandfather, then person one’s “number” is 4 (great + great + great + grand = 4) and person two’s “number” is 1 (grand = 1). The smaller of the two numbers is the degree of cousinship. The two people in this example are first cousins. The difference between the two people’s “numbers” is the degree of removal. In this case, the two people are thrice (4 — 1 = 3) removed, making them first cousins three times removed.
https://flowingdata.com/2014/11/05/chart-of-cousins/
Degrees of Cousin-ness. Terms like first cousin and second cousin refer to what I call the degrees of cousin-ness.. It's an indication of how close the common ancestor is to them. The further back the first common ancestor is, the larger the number. First cousins are as close as you can be and still be cousins.
http://www.archives.com/blog/genealogy-help/second-cousins-and-removed-cousins-difference.html
This document is intended only as a guide to aid in understanding the duties and responsibilities of the Missouri Ethics Commission. For the Law’s complete requirements, consult the law itself, codified at Chapter 105 and 130 of the Revised Statutes of Missouri. Consanguinity relationships are relatives by blood. Affinity relationships are relatives by marriage or adoption.
http://www.mec.mo.gov/WebDocs/PDF/Misc/RelationshipChart.pdf
The magnitude of risk due to family history is influenced by the number of family members affected, whether they are first-or second-degree relatives, and the age at diagnosis.
http://medical-dictionary.thefreedictionary.com/second-degree+relatives
A family history  generally means having two or more first-or second-degree relatives with a history of ovarian cancer or a combination of breast and ovarian cancer ; for women of Ashkenazi Jewish heritage , it means having a first-degree relative ( or two second-degree relatives on the same side of the family ) with breast or ovarian cancer ,  ...
http://medical-dictionary.thefreedictionary.com/second-degree+relatives
what degree relative is a cousin
Cousin is a Second-degree relative.