| ALLELES | Basic building blocks found in Spain, Luxembourg and El Salvador, after all |
| STEMCELL | Body's building block found in the umbilical cord (4,4) |
| ELF | Mischievous sort in Spain, Luxembourg and France (3) |
| ELM | Tree in Spain, Luxembourg and Malta (3) |
| COLON | Unit of currency in Costa Rica and El Salvador |
| HONDURAS | Central American country between Guatemala and El Salvador (8) |
| CHARM | In particle physics, one of the six flavours of quarks with top, bottom, up, down and strange that, along with leptons, form the basic building blocks of ordinary matter (5) |
| ATOM | Particle which is the basic building block of all matter (4) |
| ATOMS | Molecules' basic building blocks |
| RELATIONSHIPS | Basic building blocks of trust (13) |
| GRANDEE | Toff found in Spain and in two-thirds of Greece (7) |
| EAUDECOLOGNE | Essence found in Spain, French department and in Germany (3,2,7) |
| NANDINA | Evergreen of Berberis family with bamboo-like foliage - found in Spain and in Austria (7) |
| SARSEN | Type of sandstone block found in Southern England, used by the megalithic builders of Avebury and Stonehenge (6) |
| ELEMENT | Basic building block forming part of kettle (7) |
| ANVIL | Blacksmith's block found in Victorian village (5) |
| MOORISH | Architectural style found in Spain and N. Africa (7) |
| TOLEDO | Poetic tribute to Biblical figure looking back found in Spain in Castilla-La Mancha? (6) |
| SIERRANEVADA | Could confuse vain reader as they're found in Spain and USA |
| ESPARTO | A coarse grass with narrow leaves found in Spain and North Africa (7) |
