The word vegetation has a neutral denotation, while the term home has a positive connotation.
Denotation is the concrete or main meaning of a word, in opposition to the thoughts or feelings that the word suggests. In this case, vegetation is a collection of plants in a particular area.
Connotation refers to the emotions and ideas that a word brings to mind, besides its literal meaning. For example, home is the place where one lives permanently, and implies a sense of protection, good feeling and family.