Ethnomethodology is interested entirely in the human capacity to produce order out of chaos.
Ethnomethodology is a method of describing procedures of everyday interactions via structures of expectation, negotiation, improvisation.
Ethnomethodology is interested in the practices individuals use in describing their settings whereas sociology makes descriptions which compete with those descriptions.
Ethnomethodology is grounded in the idea that meanings are subjective so the only objective social reality is that of commonly understood methods of communication.
Ethnomethodology is grounded in the assumption that social order is illusory constructed in the minds of social actors and only appears to be orderly because of the organizing capacity of the mind.
Ethnomethodology is concerned with describing the practices (the methods) individuals use in their actual descriptions of those settings, whereas sociology tends to provide descriptions of social setting that compete with descriptions by the individuals who are party to those settings.
Ethnomethodology is concerned with 'how' social order is produced, whereas sociology tends to take the facticity of the social order for granted.