It would be helpful to see the context or at least the sentence you want to use. An installment is usually part of paying back a loan. An installation is usually something that that someone built or put into place (they "installed" it).
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Surfer>>Can we use another statement that describes that same context, only this time by using installment instead of installation?No. "installment of a machine" is not the correct usage of 'installment'.
SurferI didn't mean that kind of installment.Say someone installed something, a machine for example, and others want to describe that or make references to it, then how can the two words be used?For example, one might say: "the installation of that machine consumed much effort".>>Can we use another statement that describes that same context, only this time by using