Need for TCGAbiolink cancer definition

Question

[landscape95]

I need some definition for data_category in cancer field for these type in TCGAbiolink package in R, your help is appreciated:

1. DNA Methylation

2. Transcriptome Profiling

3. Biospecimen

4. Simple Nucleotide Variation

5. Clinical

6. Raw Sequencing Data

7. Copy Number Variation