Real estate trends is a generic term

Terminology

Terminology is the study of terms and their use. Terms are words and compound words that in specific contexts are given specific meanings, meanings that may deviate from the meaning the same words have in other contexts and in everyday language. The discipline Terminology studies among other...

 used to describe any consistent pattern or change in the general direction of the real estate

Real estate

In general use, esp. North American, 'real estate' is taken to mean "Property consisting of land and the buildings on it, along with its natural resources such as crops, minerals, or water; immovable property of this nature; an interest vested in this; an item of real property; buildings or...

 industry which, over the course of time, causes a statistically noticeable change. This phenomenon can be a result of the economy, a change in mortgage

Mortgage loan

A mortgage loan is a loan secured by real property through the use of a mortgage note which evidences the existence of the loan and the encumbrance of that realty through the granting of a mortgage which secures the loan...

 rates, consumer speculations, or other fundamental and non-fundamental reasons.
MSN reports that home prices have dropped by a record amount and illustrates with a chart of historical real estate prices.