Realty v/s Infrastructure

What is the difference b/w realty and infrastructure sector stocks. Are these sectors worth investing into at this point of time..?

Real estate is land and everything permanently attached to it -- so a house is real estate, but a mobile home is personal property.
Infrastructure is roads, bridges, sewer lines, etc. Since these items are permanently attached to the land, they are part of the real estate (a subset of real estate).
I hope u got it. Some companies just deal with real estate(like buying huge lands, commercial plots, agriculture lands, construction of house..etc) while some deal with infrastructure projects. They fill up the tenders for building roads, bridges,dams..etc...while some co's deal in both ..real estate & infra..

real estate co's r the most battered sector in this market crash...overall
65-80 % downfall....yes with 2 yrs horizon they will prove gems...
unitech, orbit corp, ibrealest,dlf could be nice pick..(my views)
--harsh

Thanks. Can someone suggest some good infrastructure stocks also ( both large as well as small caps)..