Characteristics may further be described as being interspecific, intraspecific, and conspecific.
Interspecificity (literally between/among species), or being interspecific, describes issues between individuals of separate species. These may include:
Intraspecificity (literally within species), or being intraspecific, describes behaviors, biochemical variations and other issues within individuals of a single species. These may include:
Two or more individual organisms, populations, or taxa are conspecific if they belong to the same species. Where different species can interbreed and their gametes compete, the conspecific gametes take precedence over heterospecific gametes. This is known as conspecific sperm precedence, or conspecific pollen precedence in plants.
The antonym of conspecificity is the term heterospecificity: two individuals are heterospecific if they are considered to belong to different biological species.