Fant 12 synonym til metan
| Ord | Ant. ord | Lengde | Bruker | Dato |
|---|---|---|---|---|
| gass | 1 | 4 | 5 | 2002-12-24 |
| brensel | 1 | 7 | 5 | 2002-12-24 |
| sumpgass | 1 | 8 | 2 | 2005-02-18 |
| gruvegass | 1 | 9 | 2 | 2005-02-18 |
| klimagass | 1 | 9 | 134 | 2010-03-19 |
| metangass | 1 | 9 | 316 | 2009-11-22 |
| naturgass | 1 | 9 | 2 | 2005-02-18 |
| drivhusgass | 1 | 11 | 3942 | 2012-01-06 |
| energikilde | 1 | 11 | 2 | 2004-03-22 |
| hydrokarbon | 1 | 11 | 2 | 2005-02-18 |
| brennbar gass | 2 | 12 | 2 | 2009-10-19 |
| fargeløs gass | 2 | 12 | 134 | 2009-09-30 |