According to Wikipedia:
Apache Hadoop is an open-source software framework that supports data-intensive distributed applications, licensed under the Apache v2 license.1 It enables applications to work with thousands of computational independent computers and petabytes of data.
In computing, NoSQL (mostly interpreted as "not only SQL"1) is a broad class of database management systems identified by its non-adherence to the widely used relational database management system model; that is, NoSQL databases are not primarily built on tables, and as a result, generally do not use SQL for data manipulation.
They are not the same thing, but are related to data inten. Hadoop is an entire framework (that can be used with NoSQL DBMS like Oracle NoSQL).