Mike Lim sent in a question that might be of interest to a wider audience. Mike wrote:
“Why do licences and contracts use the phrase ‘terms and conditions’? The two words terms and conditions seem to be almost identical in meaning.”
The meaning of term has probably taken on the meaning of condition because of its association with condition in this phrase. The original meaning of term was “limit in time or space, or limits on conditions”. Contracts by definition set limits on applicability of its conditions in terms of time and jurisdiction (space).
The term term (I had to do it) is confusing because is also refers to any specialized definition(s) of a word, e.g. “scientific terms”, “legal terms”, etc. This definition is also applicable in the phrase “terms and conditions”, and this sort of ambiguity often causes speakers to lose control of the meaning of a word in a given context. This allows the word to pick up the meaning of another word commonly associated with it. The fact that legal terminology is so alien to most speakers only exacerbates the tendency.
So these two terms have discrete meanings which have merged by association with one another—guilt by association?