The UK House of Lords can't block legislation, only delay it and suggest changes to bills. It's also appointed for life, meaning the lords are immune to political pressures - they don't have to worry about doing something unpopular and getting voted out by the people they represent.
Canada's government, based off of the UK parliamentary system has a 'Senate' rather than a 'House of Lords'; it's still appointed for life and devoid of political repercussions, but unlike in the UK it is capable of blocking legislation entirely and sending it back to the House of Commons to be reworked (or given up on).
The US senate is another step difference from Canada's system, where the senate can (IIRC) prevent legislation like in Canada but the members are elected and are therefore subject to political pressures.
The UK House of Lords can't block legislation, only delay it and suggest changes to bills. It's also appointed for life, meaning the lords are immune to political pressures - they don't have to worry about doing something unpopular and getting voted out by the people they represent.
Canada's government, based off of the UK parliamentary system has a 'Senate' rather than a 'House of Lords'; it's still appointed for life and devoid of political repercussions, but unlike in the UK it is capable of blocking legislation entirely and sending it back to the House of Commons to be reworked (or given up on).
The US senate is another step difference from Canada's system, where the senate can (IIRC) prevent legislation like in Canada but the members are elected and are therefore subject to political pressures.