Numbers / Rhifolion
| 1 | unan | un |
| 2 | daou, div | dau, dwy |
| 3 | tri, teir | tri, tair |
| 4 | pevar, peder | pedwar, pedair |
| 5 | pemp | pump |
| 6 | c'hwec'h | chwech |
| 7 | seizh | saith |
| 8 | eizh | wyth |
| 9 | nav | naw |
| 10 | dek | deg |
Days / Dyddiau’r wythnos
| Monday | dilun | dydd Llun |
| Tuesday | dimeurzh | dydd Mawrth |
| Wednesday | dimerc'her | dydd Mercher |
| Thursday | diriaou | dydd Iau |
| Friday | digwener | dydd Gwener |
| Saturday | disadorn | dydd Sadwrn |
| Sunday | disul | dydd Sul |
Colors / Lliwiau
| black | du | du |
| yellow | melen | melyn, melen |
| green | gwer | gwerdd, gwyrdd |
| gray | louet | llwyd |
| white | gwenn | gwyn, gwen |
| blue | glas | glas |
| red | ruz | coch, rhudd |
| orange | orañjez | oren |
Common names / Enwau
- many names are identical in Breton and Welsh:
aber, aer, awen, bara, barn, boned, bri, dant, eog, glin, gras, gwerin, gwin, had, mab, natur, pab, pont, sant, stad, tad, te, tor, tro
- some are very close to Breton:
| key | alc'hwez | allwedd |
| chapel | chapel | capel |
| goat | gavr | gafr |
| summer | hañv | haf |
| heart | kalon | calon |
| place | lec'h | lle |
| mother | mamm | mam |
| age | oad | oed |
| window | prenestr | ffenestr |
| meaning | ster | ystyr |
| hole | toull | twll |
| bard | barzh | bardd |
| day | deiz | dydd |
| word | ger | gair |
| sun | heol | haul |
| circle | kelc'h | cylch |
| book | levr | llyfr |
| mountain | menez | mynydd |
| Easter | Pask | Pasg |
| part | rann | rhan |
| star | sterenn | seren |
| farm | ti-feurm | ffermdy |
| world | bed | byd |
| end | diwezh | diwedd |
| rain | glav | glaw |
| salt | holen | halen |
| cock | kilhog | ceilog |
| mouse | logod | llygod |
| pork | moc'h | moch |
| fish | pesked | pysgod |
| freeze | rev | rhew |
| bull | tarv | tarw |
| health | yec'hed | iechyd |
| arm | brec'h | braich |
| island | enez | ynys |
| woman | gwreg | gwraig |
| chair | eye | cadair |
| eye | lagad | llygad |
| horse | marc'h | march |
| number | niver | nifer |
| pond | poull | pwll |
| school | skol | ysgol |
| egg | vi | wy |
| language | yezh | iaith |
Adjectives / Ansoddeiriau
| other | all | arall |
| wicked | drouk | drwg |
| true | gwir | gwir |
| ill | klañv | claf |
| drunk | mezv | meddw |
| each | pep | pob |
| large | tev | tew |
| short | berr | byr |
| second | eil | ail |
| long | hir | hir |
| strong | kreñv | cryf |
| close | nesañ | nesaf |
| possible | posubl | posibl |
| top | uhel | uchel |
| living | bev | byw |
| pure | glan | glân |
| low | izel | isel |
| merry | laouen | llawen |
| new | nevez | newydd |
| dry | sec'h | sych |
| health | yac'h | iach |
| beautiful | brav | braf |
| low | gwan | gwan |
| hard | kalet | caled |
| full | leun | llawn |
| far | pell | pell |
| light | skañv | ysgafn |
| young | yaouank | ieuanc |
Verbs / Berfenwau
| to lengthen | astenn | estyn |
| to play | c'hoari | chwarae |
| to call | gelver | galw |
| to sing | kanañ | canu |
| to walk | kerzhet | cerdded |
| to believe | krediñ | credu |
| to run | redek | redeg |
| to study | studiañ | astudio |
| to sit | azezañ | eistedd |
| to learn | deskiñ | dysgu |
| to see | gwelet | gweld |
| to love | karout | caru |
| to hear | klevet | clywed |
| to read | lenn | darllen |
| to give | reiñ | rhoi |
| to break | terriñ | torri |
| to live | bevañ | byw |
| to come | dont | dod |
| to sell | gwerzhañ | gwerthu |
| to have | kaout | cael |
| to lose | koll | colli |
| to go | mont | mynd |
| to dry | sec'hañ | sychu |
| to turn | treiñ | troi |
| to feed | boueta | bwydo |
| to drink | evañ | yfed |
| to dress | gwiskañ | gwisgo |
| to take | kemer | cymryd |
| to sleep | kousket | cysgu |
| to fold | plegañ | plygu |
| to cut | troc'hañ | torri |
Other words / Geirau arall
| I | me | mi, fi |
| you (singular form) | te | ti |
| he | eñ | e(f), fe |
| she | hi | hi |
| we | ni | ni |
| you (polite and plural form) | c'hwi | chi |
| they | int | nhw |
| my | ma | fy |
| your (singular form) | da | dy |
| his | e | ei |
| her | he | ei |
| our | hor | ein |
| your (polite and plural form) | ho | eich |
| their | o | eu |
| who? | piv? | pwy? |
| where? | pelec'h? | ble? |
| as | evel | fel |
| and | ha, hag | a,ac |
| in order to | a-benn | erbyn |
| under | dindan | dan |
| without | hep | heb |
| with | gant | gan |
| on | war | ar |
| here | amañ | yma |
| sometimes | a-wezhioù | weithiau |
| there | eno | yna |
| today | hiziv | heddiw |