(feeling of) identification; sense of unity
... the heck (e.g. "what the heck?"); ... in the world (e.g. "why in the world?"); ... on earth (e.g. "who on earth?")
the two views (of an object) referring to the same thing; being inseparable like the two sides of an object; two sides of the same coin
the Trinity; three parts; three components; three factors
combined unit; two-in-one unit; many-in-one unit; integrated model
unified effort of government and private sector
oneness; unity; integrity; inclusion
integral; integrated; seamless; complete; unified
having one's workplace at home; living and working at the same location (independent farmers, home workers, storekeepers, etc.)