Penny,
Tenach is a hebrew acronym for:
T = Torah
a
N=Navi
a
K=Ketuvim
These are the three parts of Jewish scripture....
Torah is the five books of Moses, or as we call it Chumash {meaning five}...
Navi is the books of the Prophets...
Ketukim are the megillahs and the other holy writings including Psalms..
So when we talk about Tanach we are talking about the entire canon of Jewish scripture while Torah in this context is just the five books... But the Word Torah also means 'Teachings' and it can be used to refer to the entire Tanach.
http://en.wikipedia.org/wiki/TenachThe Tanakh (Hebrew: תַּנַ"ךְ, pronounced [taˈnax] or [təˈnax]; also Tenakh or Tenak) is a name for the Bible used in Judaism, also known as the Masoretic Text. The name "Tanakh" is a Hebrew acronym formed from the initial Hebrew letters of the Masoretic Text's three traditional subdivisions: The Torah ("Teaching", also known as the Five Books of Moses), Nevi'im ("Prophets") and Ketuvim ("Writings")—hence TaNaKh. The elements of the Tanakh are incorporated in various forms in Christian Bibles, in which, with some variations, it is called the "Tanach". The Tanach does not use the traditional Hebrew subdivisions, though the distinction "Law and the Prophets" is used several times in the New Testament.[1]