Homology may refer to:
- Homology (anthropology), analogy between human beliefs, practices or artifacts owing to genetic or historical connections
- Homology (biology), any characteristic of biological organisms that is derived from a common ancestor.
- Homology (chemistry), the relationship between compounds in a homologous series
- Homology (mathematics), a procedure to associate a sequence of abelian groups or modules with a given mathematical object
- Homology modeling, a method of protein structure prediction
- Homology (sociology), a structural 'resonance' between the different elements making up a socio-cultural whole
- Homology theory, in mathematics
Homologous may refer to:
- Homologous chromosomes, chromosomes in a biological cell that pair up (synapse) during meiosis
- Homologous desensitization, a receptor decreases its response to a signalling molecule when that agonist is in high concentration
- Homologous recombination, genetic recombination in which nucleotide sequences are exchanged between molecules of DNA
- Homologous series (chemistry), a series of organic compounds having different quantities of a repeated unit
- Homologous temperature, the temperature of a material as a fraction of its absolute melting point
Homological may refer to:
- Homological word, a word expressing a property which it possesses itself
- Homological algebra, a branch of mathematics