1) “A set of connected individuals”

2) “Although the term network is often used casually to indicate a set of affiliated entities, here we discuss networks in the more formal sense of a group of nodes and the links between them. Nodes may represent entities ranging from genes to species to individual people to geographic locations (Table 1). Links may represent associations such as the tendency for species to occur together, communication between people, or potential pathogen spread between geographic locations.”

References

1) Pautasso, M. (2015). Network simulations to study seed exchange for agrobiodiversity conservation. Agron. Sustain. Dev. 35, 145–150. https://doi.org/10.1007/s13593-014-0222-9

2) Garrett, K.A., Alcalá-Briseño, R.I., Andersen, K.F., Buddenhagen, C.E., Choudhury, R.A., Fulton, J.C., Hernandez Nopsa, J.F., Poudel, R., Xing, Y., 2018. Network Analysis: A Systems Framework to Address Grand Challenges in Plant Pathology. Annu. Rev. Phytopathol. 56, 559–580. https://doi.org/10.1146/annurev-phyto-080516-035326