WHAT IS THE DIFFERENCE BETWEEN TECHNICAL REPORT AND TECHNICAL SPECIFICATION (TR&TS).
AND HOW DOES TR/TS FIT IN WITH ISO9000 AND ISO14000.

TR was the early version - essentially a proposal. TS was/is the next step in the process of approval and use of the document. 16949 is now at the TS stage. 16949 is not related to 14001 but is based upon 9001:1994 as well as VDA6.1 and QS9000. Read through the 16949 threads for more detail.