1. Nature

Categories of the Nature Realm

100. Phenomenon

101: Energy

102: Creation

103: Experience

104: Commerce

105: Communication

106: Process

110. System

111: Nature

112: Environment

113: Being

114: State

115: Community

116: Cosmos

120. Metaphysics

121: Collation

122: Collection

123: Taxonomy

124: Geography

125: Law

126: Eventuality

130. Observation

131: Phenomenon

132: Experiment

133: Analysis

134: Review

135: Science

136: Information

140. Science

141: Experiment

142: Review

143: Analysis

144: Information

145: Dissemination

146: Paradigm

150. Ontology

151: Cosmology

152: Ecology

153: Biology

154: Sociology

155: Ideology

156: Chronology

160. Discovery

161: Artifact

162: Documentation

163: Scientists

164: associations

165: regulations

166: chronologies