Genome and DNA - whats the correlation

[DRKFUTURE]

1- When we call Human Genome, do we mean only the portion of DNA that codes for Protein (which estimates 20,000 to 26000), or we mean all the DNA (coding & non coding)

2- Do All Genes code for protein? (if Not, why call it a gene?) 

3- What is gene actually? anything that codes  for protein or liable for a human Trait, or gene has other functions? 

[CharonY]

1 all DNA

2 normally yes (but can also refer to loci that are only transcribed but not translated... Such as rRNA)

3 at minimum will be transcribed, typically refers to protein coding