Project approach firmly taken its place in the modern world. A key role in developing and promoting a systematic project management have played and continue to play a non-profit organization started by practicing project managers. International Project Management Association (IPMA), brings together 55 national associations and their number is constantly increasing. The paper identified the relationship between the terms "standards", "methodology", "approach", "method" and "tools" in relation to professional project management, as well as their relationship in terms of "of terminology." Terminology, field of applied linguistics, terminology considers and determines the terms and their components, as instruments for the formation of scientific theories, laws, principles and provisions. In the professional field of design activity without this clearly is not enough. Currently only RMVoK glossary contains as amended in 2013 about 400 terms. Accordingly, the terminology of project management has already represents not only the terminology naturally existing set of terms in their field, and can be considered as terminological ordered terminology with fixed relationships between terms and requiring further study, reflection and their proper use.